gr. 3 - matter and energy - hw packet (2012)
TRANSCRIPT
Grade: 3 Unit 1: Matter and Energy Science Homework
Student Number:
Name: _____________________________ Room: _____ Date: __________________Grade: 3 Unit 1: Matter and Energy Science Homework______________________________________________________________________
Homework packet link: https://sites.google.com/a/ccs-rams.org/pan/
Investigation 1 Part 1: Energy Sources
1. What is the source of most Earth’s energy? (p.3)
(Circle the one correct answer.)
a. The Sun
b. The moon
c. Water
2. What two forms of energy do we get from the Sun? (p.3)
___________________________________________________________________
3. Which one of the following are examples of stored energy? (p.4~9)
(Mark all the correct answers.)
_____ battery _____ fuel _____ wire
_____ light bulb _____ food _____ coal
_____ oil _____ wood _____ gasoline
4. What is fuel? (p.4)
(Circle the one best answer.)
a. Energy from the Sun
b. Heat
c. Stored energy
5. To convert means to ____________________. For example, coal is converted
into heat when it is burned; food is converted into energy when it is digested. (p.4,
Word Bank for Investigation 1 Part 1)
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Grade: 3 Unit 1: Matter and Energy Science Homework
6. Matching: Draw a line from each living things or object in the left column to the
source of the energy it uses in the right column.
Investigation 1 Part 2: Converting Energy
7. As food breaks down in your body, chemical energy in the food is converted to
what two forms of energy? ____________________ and ____________________.
(p.10)
8. When plants die and got buried deep underground, for a long time, they become
____________________ fuels such as oil, coal, and natural gas. (p.11)
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Grade: 3 Unit 1: Matter and Energy Science Homework
9. Which of the following needs energy?
(Mark all the correct answers.)
_____ to ride a bike
_____ to read a book
_____ to heat a house
_____ to power a car
_____ to build a birdhouse
_____ to think about what to do for the weekend
10. Connect Concepts:
Use the terms in the Word Bank to complete the concept map.
Motion Food Sun Heat Batteries
11. Where do animals get energy to grow? (Circle the one best answer.)
a. Food
b. Heat
c. Water
d. Rest
e. Electricity
Almost all energy on Earth comes from
a. _____________
which can be stored in
b. _____________ c. _____________fuel
and can be used by animals for energy.
and can be burned to produce d. _________ and e. _____________.
and can be used to supply electricity to toys and appliances.
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Grade: 3 Unit 1: Matter and Energy Science Homework
12. Stored energy in corn can be converted to what other forms of energy? (p.14)
(Circle all correct answers)
a. heat
b. motion
c. light
d. electricity or electric current
13. Park has a flashlight that won’t light up, and he thought the light bulb didn’t have
any energy stored in it. His sister, Li Mei, told him that the flashlight isn’t where the
energy is stored.
a. Where is the stored energy in a flashlight? _______________________________
b. What is the energy converted to? ______________________________________
Investigation 1 Part 3: Energy on the Move
14. Connect Concepts: Use the terms in the Word Bank to complete the concept
map.
Sound waves Electric current Water waves
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Grade: 3 Unit 1: Matter and Energy Science Homework
15. ___________________ is the flow of electric energy from the battery to the
motor through wires. (p.16)
16. ___________________ is a regular, repeating movement, like up-and-down or
back-and-forth. (p.17)
17. When a bell rings, its vibration creates ________________ waves that travel
through air. The waves finally hit little bones in your ear, so you can hear the sound
of the bell. (p.17)
18. When you go bowling, the energy is carried from your body to the bowling ball,
and to the pins. What can be another example of energy being carried by moving
objects?
___________________________________________________________________
___________________________________________________________________
Investigation 2 Part 1: Reflected Light
19. ____________________ is anything that makes light, such as the Sun, a
lightbulb, or a flame. (p.26)
Energy can be carried from one place to another by
a. ______________moving objectswaves
For example: batteries are used to power the spinning shaft in motor c. _____________b. _____________
includes
For example: fire truck comes by and we hear the whistle
For example: powerful tsunami destroys areas near the coast
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Grade: 3 Unit 1: Matter and Energy Science Homework
20. ____________________ travel from a light source in straight lines in all
directions. (p.26)
21. We cannot see anything in a dark room. If there is a light source, we can see
things because the light rays from the light source enter our __________________.
(p.27)
22. When light rays ____________________, they bounce off an object or surface
such as a piece of paper. (p.27)
23. It is 9 o’clock in the morning, you are hiking in Lake Chabot Park with family and
suddenly you see a butterfly flying by. How does the light work to make you see the
butterfly? Put in order the following events: (p.27)
1. ____ 2. ____ 3. ____
a. Light enters the eyes.
b. Light rays come from the Sun.
c. Light rays reach the butterfly and reflect in straight line, to another direction.
24. How does reflected light allow us to see an object? (Circle the one best answer.)
a. Light reflects from our eyes onto an object.
b. Light reflects off an object and into our eyes.
c. Light reflects off the Sun to our eyes.
25. A _____________________ is a smooth and shiny surface that reflects light.
(p.28)
26. Sailors in submarines are able to look around the ocean’s surface because they
use a ______________________, which is a device made with two mirrors. (p.28)
27. If a mirror is placed on the line next to the picture of the snail below, which of the
following would show the image of the snail in the mirror? (Circle the one best
answer.)
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Grade: 3 Unit 1: Matter and Energy Science Homework
28. Aiyana set four mirrors around a barrier as shown below, but she found she
could not see the object on the other side.
29. Olivia wrote in her science notebook, “A mirror reflects light. But I do not make
light. So how can I see myself in a mirror?” Explain to Olivia how a mirror works.
___________________________________________________________________
___________________________________________________________________
Investigation 2 Part 2: Colored Light
30. T or F. Objects such as an orange do not reflect light, only a mirror reflects light.
(p.32)
31. T or F. An orange looks blue in blue light. (p.33)
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Grade: 3 Unit 1: Matter and Energy Science Homework
32. _____________________________ is all colors of light mixed together, so it is a
combination of red, orange, yellow, green, blue, indigo, and violet lights. (p.35)
33. Lights can be absorbed by an object or a surface. To ___________________
means to take in or soak up. (p.35, or Word Bank for Investigation 2 Part 2 )
34. When light hits an object or a surface, it can either ___________________
(bounce off) or be _____________________ (taken in or soaked up) by the object or
surface. (p. 36, or Word Bank for Investigation 2 Part 1 & 2 )
35. Fill the blanks with orange, blue, or black.
Since we can only see lights being reflected from an object or a surface, we cannot
see lights being absorbed. For example, when an orange is placed under white light,
it reflects orange light from the white light and its color appears ______________.
When it is placed under blue light, there is no orange light being reflected, the blue
light is absorbed by the orange, so the color of the orange becomes
_____________.
36. Which of the following objects would appear black in a room lit with only red
light?
(Circle the one correct answer.)
a. A white block
b. A blue chair
c. A red ball
37. T or F. When light is reflected, it is still light. When light is absorbed, it is
converted into another form of energy, such as heat energy. That is why a black T-
shirt will feel warm under the sun, because all lights are absorbed and converted to
heat. (p.36)
38. A mirror can change the ________________ of the light so you can see what is
going on behind you. (p.37)
39. Why does a green leaf appear green in sunlight?
Sunlight is white light. The green leaf reflects _________________ light and absorbs
all other colors of light.
40. Why does a green leaf appear black in red light?
Does the green leaf reflect red light? (Yes / No)
The green leaf absorbs ____ light, therefore the green leaf appears black in red
light.
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Grade: 3 Unit 1: Matter and Energy Science Homework
41. A __________________ is a dark area where an object has blocked the light.
(Word Bank for Investigation 2 Part 2 )
42. In order to create a shadow, there must be a _________________________
such as a light bulb, and an object to block the light.
43. Which of the following are sources of light (they create their own light)?
(Mark all the correct answers.)
_____ the Sun
_____ a burning match
_____ a mirror
_____ the Moon
_____ your eyes
_____ stars
44. What direction do shadows always point? (Circle the one best answer.)
a. Toward the Sun
b. Away from the Sun
c. To the left
Investigation 3 Part 1: Fact of the Matter
45. ______________ is anything that has mass and takes up space. It is the stuff
that everything is made of. (p.41 or Word Bank for Investigation 3 Part 1).
46. Matter is found on Earth in three common forms or ______________. (p.41)
47. ______________ have definite shape and they keep that shape all the time.
They do not change shape unless you do something to change, like bend it or cut it.
(p.41)
48. ______________ can flow and takes the shape of the container it is in. They do
not form a pile, but a puddle. (p.42,44)
49. ______________ is shapeless and expands to fill a closed container. (p.43)
50. Look at the list of matter below. Put an S in front of each solid, an L in front of
each liquid, and a G in front of each gas.
_____ rock _____ juice _____ sand
_____ air _____ shirt _____ helium inside a balloon
_____ plastic cup _____ oil _____ gasoline
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Grade: 3 Unit 1: Matter and Energy Science Homework
51. John and Tony go to the circus. They see a lion, a giraffe, and an elephant. John,
Tony and the animals are matter because they ____________________.
a. take up space
b. are breathing
c. are at the circus
52. John buys Tony balloons to take home from the circus. Which state of matter is
the helium inside the balloon?
a. gas
b. solid
c. liquid
53. How can you tell if a sample of matter that pours is solid or liquid? (p.44)
___________________________________________________________________
___________________________________________________________________
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Investigation 3 Part 2: Weighty Matters
54. Teasha has not performed an experiment on sponges, yet she claimed that
natural sponges last longer than synthetic ones (manmade). Was her claim based
on opinion or evidence? (p.45) ______________
55. Teasha and Kim soaked and weighted 3 natural sponges and 3 synthetic
sponges. Why did they repeat the experiments? (p.46)
Teasha and Kim repeated the experiments because__________________________
________________________________________________________________
56. ______________ is the measure of how much stuff is in an object. (Word Bank
of Investigation 3 Part 2)
57. ______________ is the basic unit of mass in the metric system. For example, a
newborn baby may weight around 3,000 grams. (Word Bank of Investigation 3 Part
2)
58. ______________ are based on what a person believes to be true, not on
scientific data. ______________ is based on observation and scientific data. (p.48)
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Grade: 3 Unit 1: Matter and Energy Science Homework
59. Orenda and Akia each used marbles to weigh the same apple. Both used the
correct procedure. Their results are shown below.
Orenda Akia
33 marbles 60 marbles
a. Since they weighed the same apple, why do you think they got different
results?
______________________________________________________________
b. What could they do to make their results more useful for other students?
______________________________________________________________
60. Look at the picture below.
a. Which of the following could be the mass of the ball?
(Circle the one best answer.)
A. 20 grams
B. 30 grams
C. 40 grams
b. Why do you think that is the mass of the ball?
______________________________________________________________
______________________________________________________________
Investigation 3 Part 3: A Matter of Volume
61. The _________________________ is a system of weights and measures based
on multiples of ten. (Word Bank of Investigation 3 Part 3)
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Grade: 3 Unit 1: Matter and Energy Science Homework
62. The metric system is based on a unit called ______________, which comes from
the Greek word metron for measure. (p.49)
63. Prefixes such as milli, centi, and deci are added to the beginning of the word
“meter” to represent different units. For example, one ______________ is one-
hundredth of a meter. (p.49)
64. ______________ is the basic unit of liquid volume in the metric system. (p. 49,
Word Bank for Investigation 3 Part 3)
65. Almost all countries except the United States use the metric system as the
standard system. Why is it important to use a standard unit when making
measurements? (p.50)
___________________________________________________________________
___________________________________________________________________
66. One ______________ is is 1/1000 of a liter; 1000 milliliters equal 1 liter (1
milliliter equals 1 cubic centimeter). (Word Bank for Investigation 3 Part 3)
67. Fill in the blank:
Metric System
Basic Unit Equipment for measurement
Length meter (m) Ruler, tape measure
Mass a. ______________ Balance
Volume liter (L) b. ____________________
Or
c. ____________________
(p.53)
68. What is the volume of water in the graduated cylinder shown at right?
(Each increment equals 1 mL)
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Grade: 3 Unit 1: Matter and Energy Science Homework
69. A graduated cylinder is used for measuring
(Circle the one best answer.)
a. Mass.
b. Volume.
c. Temperature.
70. A paper clip has a mass of 1 gram. A train has a mass of thousands of kilograms.
What is the best unit to be used when recording the mass of a bicycle? (p.53)
(Circle the one best answer.)
a. kilogram
b. gram
c. liter
71. What is the difference between evidence and opinion? (p.53, check question#59)
Evidence is based on _________________________________________________.
Opinions are based on ________________________________________________.
Investigation 4 Part 1: Measuring Temperature
72. ______________ is a measure of how hot or how cold something is. (Word Bank
for Investigation 4 Part 1)
73. ______________ is a tool used to measure temperature. (Word Bank for
Investigation 4 Part 1)
74. ________________________ is the metric unit of temperature. (Word Bank for
Investigation 4 Part 1)
75. What measuring tool should be used to measure the temperature of a cup of
water?
(Circle the one best answer.)
a. thermometer
b. balance
c. graduated cylinder
76. What is the temperature shown in the thermometer?
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Grade: 3 Unit 1: Matter and Energy Science Homework
77. What units are used in the metric system for reporting temperature?
a. milliliters
b. degrees Celsius
c. centimeters
Investigation 4 Part 2: Melting and Evaporation
78. ______________ is the change of state from solid to liquid as a result of heating.
(Word Bank from Investigation 4 Part 2)
79. What causes materials to melt from solids to liquids? (p.56) ______________
(one-word answer)
For example, if you put a chunk of margarine in a cup of hot water, it will melt.
80. Materials melt at different temperatures. For example, water melts at 0 °C,
chocolate melts at about 50 °C, candle wax melts around 80 °C, and pebble melt at
1,000 °C. Therefore at 99 ° C , which one of the following will be melted into
liquid? (p.57)
(Circle all correct answers.)
Water Chocolate Candle wax pebble
81. Emmet tried to melt a sugar cube in a cup set in hot water. After 5 minutes the
sugar did not melt. He said, “Sugar won’t melt.”
What could Emmet do to try to melt the sugar?
(Circle the one best answer.)
a. Leave the cup wit the sugar in the hot water longer.
b. Use less sugar in the cup.
c. Add more heat by putting the sugar over a flame.
82. ______________ is the change of state from liquid to gas as a result of heating.
(Word Bank from Investigation 4 Part 2)
83. What causes liquids to evaporate? ______________ (one-word answer) For
example, wet cloth gets dry on a hot day in couple of hours.
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Grade: 3 Unit 1: Matter and Energy Science Homework
84. When invisible water vapor rises up high in the sky and cools, the water vapor
changes back into liquid. This liquid becomes visible, which is ______________.
(p.58)
85. A shallow pond can dry up because of ____________. (Choose one correct
answer)
a. ice
b. cold weather
c. heat and evaporation
d. snow falling during the winter
86. Alanna was heating some water for tea in a teapot on the stove. She left to
answer the telephone and forgot about the water in the teapot. When she came
back, the teapot was empty.
a. What happened to the water in the teapot? The water in the teapot
______________.
b. Why did this happen? ____________________________________________
______________________________________________________________
87. ______________ is the smallest particle of an element. The building blocks of
matter. (p.59, Word Bank for Investigation 4 Part 2)
88. Atoms in ______________ are vibrating and jiggling as they stuck together.
(p.60)
89. Atoms in ______________ touch, but they flow past one another. (p.60)
90. Atoms in ______________ fly around, crushing into things and bouncing off in
new directions. (p.61)
91. What would liquid atoms look like in an empty container? Draw circles to
represent atoms: (p.60)
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Grade: 3 Unit 1: Matter and Energy Science Homework
92. A piece of gold is made of ______________ atoms only, and a piece of copper is
made of ______________ atoms only. (p.62)
93. A piece of matter that is made of just one kind of atom is an ______________.
(p.62)
94. The __________________________________________________ shows all the
90 natural elements and 20 elements made by scientists in laboratories. (p.62)
95. In ancient times, scholars thought all matter was made of only four elements.
What are the four ancient elements? (p.63) (Mark the four correct answers.)
_____ oxygen _____ water _____ fire _____ hydrogen
_____ atoms _____ earth _____ air
96. Water is a combination of hydrogen and ______________ atoms. (p.63)
97. What is the smallest particle that makes up elements? (Circle the one best
answer.)
a. Matter
b. Air
c. Atom
98. Different types of atoms, such as gold, oxygen, and hydrogen, are called
(Circle the one best answer.)
a. elements.
b. earth.
c. air.
Investigation 4 Part 3: Reactions
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Solid Liquid Gas
Grade: 3 Unit 1: Matter and Energy Science Homework
99. A ______________ is a material that has unique, describable properties. For
example, vinegar is a substance that is in liquid state and with a strong smell. (p.65,
Word Bank for Investigation 4 Part 3)
100. A ______________ happens when substances interact to make one or more
substances that have different properties than the starting substances. (p. 66, Word
Bank for Investigation 4 Part 3)
101. After Carlo mixed vinegar and baking soda together, a gas called
________________________ formed. He knew this was a new substance because
no solid baking soda was left, and the smell of vinegar disappeared. (p.66)
102. After the reaction between vinegar and baking soda took place, there was less
mass in the reaction cup. Why do you think that happen? (p.67)
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
103. There are about 90 different natural elements, but about millions of different
substances on Earth. How do new substances form? (p.67)
___________________________________________________________________
___________________________________________________________________
104. What happens to the atoms in a liquid when it is heated? (Circle the one best
answer.)
a. The atoms move slower.
b. The atoms move the same speed.
c. The atoms move faster.
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