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Grade 4 1st Quarter Science Review

Topic: States of Water; The Changing State of Matter – Boiling, Melting, Evaporation

I. Fill in the blanks with the words from the box.

Melting 100◦ C Evaporation Bubbles Steam

Boiling Ice Humidity Rate of Evaporation Rain

1. ______________ is the temperature needed to turn liquid water into gas.

2. ______________ is what happens when solid water turns to liquid.

3. A liquid can turn to gas at temperatures below its boiling point. This is process is called

_________________.

4. One example of liquid water is ___________________.

5. How quickly of slowly evaporation takes place is known as the

______________________________________.

6. __________________ is a gaseous state of water.

7. The amount of water vapor in the air is called _______________________________.

8. When you heat water until steam comes out, we say that the water is ______________.

9. _________________ is an example of solid water.

10. When water boils, ____________________ form in the water.

II. Write T before the number if the statement is true. Write F is it is false.

______ 1. Water can change its state when it gains or loses heat.

______ 2. Boiling is a process when solid changes into a liquid.

______ 3. Steam is invisible.

______ 4. The mist you often see when water boils is made up of tiny water droplets that

are formed when the steam condenses.

______ 5. Evaporation is a process that changes water from its liquid state to its gaseous

state at its boiling temperature.

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III. Answer the following questions.

1. What are the three main factors that affect the rate of evaporation?

a.

b.

c.

2. What are the three states of matter?

a.

b.

c.

3. What state of matter cannot be seen? _________________________________

4. Give 2 examples of the gaseous state of water: _________________________

5. Give 2 example of the solid state of water: _____________________________

6. Give 2 examples of the liquid state of water:

______________________________________________

7. How is steam produced?

______________________________________________

8. What is your favorite state of water? Why?

________________________________________________________________

________________________________________________________________

IV. Complete the following table. Write high or low.

Condition Rate of Evaporation

Low temperature of surroundings

High temperature of surroundings

High humidity

Low humidity

Absence of wind

Presence of wind

Large surface area

Small surface area