science practice paper 5
TRANSCRIPT
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Science Practice Paper 5
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1.
Matter has mass and occupies space.
Mass = amount of matterOccupies space = has volume
(amount of space)
Not all matter can be seen e.g. air
(1)
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2.
Rolling dough or plasticine changes its shape but not its volume or mass/weight
(2)
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3.
Mass = amount of matter
Objects that have the same mass may not have the same volume or shape.
eg. 1 kg of cotton wool is definitely much BIGGER than 1 kg of iron because cotton wool is lighter and needs more to weigh the same as the iron.
(3)
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4.
The marble took up space in the water so it has volume.
(4)
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5.
All the containers can store 500 cm³ of oxygen because oxygen is a gas and does not have a definite volume. It can fill smaller or bigger containers.
(4)
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6.
The balloon becomes lighter when air is removed. This shows that air has mass.
(1)
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7.
The systems in our body work together.
(1)
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8. The digestive juices break the food down
into simple substances in the mouth, stomach and small intestine.
These simple substances are absorbed by passing through the thin walls of the small intestine into blood vessels.
Click here to view Digestive System Animation 1Click here to view Digestive system Animation 2
(4)
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9.
The lungs (A) is part of the respiratory system
(1)
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10.
Flower→ Fruit → Seed → Seedling
(1)
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11.
The leaves will continue to lose water through the stomata even when the flowers are removed.
Only Graph B shows the amount of water decreases/drops after a few days.
(2)
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12.
The seed leaf will provide food for the growing seedling.
(3)
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13.
Light is a form of energy.
(2)
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14.
The luminous paint on the safety vests reflects light.
(1)
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15.
The drinking glass is transparent so it will not cast a shadow.
(4)
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16.
Bigger shadow – object nearer to light source OR object further from screen
Click here to learn how the size of shadow can change
(1)
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17.
Shadows are formed because light travels in a straight line and the light is blocked by an opaque or translucent object.
(3)
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18.
The light is shining on the square face of the object.
(2)
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19.
Only the plastic book cover is transparent.
Transparent objects allows light to pass through them.
(4)
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20. The object must NOT allow light to
pass through it.
It must also be between the light source and wall.
(3)
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21.
The number of shadows shows the number of light sources.
(2)
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22.
Organism A : “special light organs ..which produce light ..make them glow in the dark”
Organism B : “attracted to light”
Organism C : “…glow flourescent red”
Only A and C can be seen in the dark.
(3)
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23.
The uses of magnets – for helping digestion in cows, for storing computer data on disks and for Maglev trains.
(2)
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24.
When like poles are facing each other, magnets will move away or repel.
(3)
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25. (4)
N
N
S
N S
S S
S
N
N
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26.
Tanks contain air.
(1)
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27.
Fungi is not green.
Plants do not feed on dead plants- they can make their own food.
Fungi cannot make their own food.
Both are living things that respond to changes.
(4)
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28.
Moles use their sense of touch as they are blind.
Clue – ‘bump their heads against the sides’ – this will let them feel the walls.
(2)
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29.
To determine if an organism is an insect, count the body parts.
Insects have six legs and three-segmented (head, thorax and abdomen) bodies.
(4)
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30.
The fly has four stage life cycle – egg, larva, pupa and adult.
The mosquito also has four stages.
(4)
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31a)
b) Air takes up space and the balloon is
made of an elastic material that can
expand.
Solid Liquid Gas
Plastic Bag Air
Balloon
Coloured Pencil
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32.
a) The water level will rise.
b) Water from the basin enters the cylinder to occupy the space of the air that has been sucked up.
33.
a) There are air spaces in Solid X.
b) Sponge/Cotton/Styrofoam
c) Solids have a definite shape / volume.
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34.
a) True. (Water + X = 50 ml)
b) True. ( Y = 100 ml (150 – 50), X less than 50 ml)
c) Not possible to tell. (Z=10 ml (160-150) but X ?)
d) False (X less than 50 ml, Y= 100 ml, Z = 10ml)
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35.
a) A. (leaves)
b) B. (roots)
36.
a) i) Use the same type of soil.
ii) Use the same type of bean.
b) Yes. Seeds do not need sunlight to germinate.
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37.
a) Stomach → small intestine
b) mouth
c) Water
38.
a) Respiratory system
b) Skeletal System
c) Circulatory system
d) Digestive system
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39.
a) ☼
b) The shadow becomes longer
c) Between 10 am and 2 pm
☼
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40. a) Light shadow → clear water pond A Dark shadow → muddy water pond Bb) Clear water allows more light to pass
through than muddy water.c) Very little sunlight can reach plants in
pond B and plants need sunlight to survive.
41a).
b)
eye
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42a)
b) The moon reflects light from the Sun.
Gives out light on its own
Does not give out light on its own.
Lightning diamond
battery
mirror
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43.
a) R and S
b) Q
c) Metal
44.
• microscope
• Bacteria/Yeast
• Helps us to break down food/
Keep us healthy/
Use to make food
45. a) Living things respond to changes
b) Living things need water.
c) Living things reproduce.