ADVANCED GENERATIONS SCHOOLS.
Science Revision Pack.
Answer Key
Name: ……………………………………………………..
Grade: 4
2016 – 2017
Term 2
0
Section A: Biology.
Question1: Parts of a Plant
Different parts of the plant have been labelled.
1. Where in the plant do the following two things happen?
Write a letter for the correct part of the plant in the box.
a. Part of the plant where water and nutrients are absorbed from the soil R
b.
2.
Part of the plant where seeds will form
F
What must all plants have to grow well?
Tick TWO boxes.
light
darkness
worms
gravel
nutrients
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pots
Question 2: Name 3 things a plant needs to grow:
Water – Light- nutrients
Question3: Circle the correct answer:
1. Photosynthesis takes what 4 things to create energy?
a. carbon dioxide, chlorophyll, water, and light
b. carbon monoxide, seeds, water, and light
c. carbon dioxide ,cytoplasm, pollen, and light
d. carbon monoxide, cytoplasm, chlorophyll, and light
2. Chlorophyll is a
a. Pigment
b. Photosynthesis
c. Process
d. flower
3. The process of photosynthesis takes place in the……………….of the plant.
a. leaves
b. flower
c. roots
d.seeds
4. Female part of a flower is called
a. Carpel
b. Stamen
c. Petals
d. Sepals
5. The male cells are
a. Ova.
c. Carpel
b. Pollen grain.
d. Stamen
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6. Plants produce what two products in photosynthesis?
a. carbon dioxide and oxygen
b. starch and carbon dioxide
c. oxygen and starch .
d. nitrogen and glucose
Question 4: Place the words in the correct order:
Carbon dioxide
starch
light
oxygen
Carbon dioxide+ light+ water+ chlorophyll
chlorophyll water
Starch + Oxygen
[3]
Question 5: Look at the diagram of a flower below:
Stamen
Petal
Stigma
1. Name A, B and C by choosing a word from the
box above.
A: Petal
B: Stigma
C: Stamen
Question 6: Fill in the blank by choosing a word from the box below:
Seed dispersal
germination
Low
Insect pollination
1. Insects carry pollen from one plant to another. This process is called Insect pollination
2. Seed dispersal is when a seed is spread away from the parent plant.
3. The process a seed turns into a seedling is called germination.
4. Temperature affects the growth of plants and low temperature slows down growth.
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Question 7:
Describe the function of each part of the flower .
1.
The petal
Colour attracts insects.
2.
The stamen
It is the male part of the plant, makes pollen.
3.
The stigma
The female part of the plant, pollen sticks to it to fertilize ovules.
4. Leaf
Uses sunlight , air, water and nutrients from the soil to make food .
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Section B: Chemistry
Question 1: What are the 3 states of matter?
Solid , liquid , Gas
Question 2: Tick the correct answer:
Gas Solid Liquid
√
Keep their shape
√
Can change their shape depending on the container
√
Do not have a definite shape or volume.
Question 3: Answer the following questions:
a. The different forms of water are observed in a water cycle. Put ONE √ in each row of
the table to show whether each is solid, liquid or gas.
Form of water
Solid
Liquid
Gas
Ice
√
Water vapour
√
Rain
√
Snow
√
b. At what temperature does water start boiling?
100o C
c. At what temperature does water freeze to form ice?
0o C
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d. Match the following with SOLID, LIQUID or GAS
Oxygen
Steel
Foil
Helium
Milk
Wood
Oil
Iron
SOLID
LIQUID
GAS
e. Complete the following table by describing the change of state. The table has been
partially completed to help you.
Change of state
Condensation
Gas ----- Liquid
Evaporation
Liquid
Melting
Solid ----- Liquid
Freezing
Liquid ----- Solid
Question 3: Sun and Light
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Gas
Clothes were drying on a washing line.
The water in the clothes turns into water vapour in the air.
1. Write the name of the change from water to water vapour.
Evaporation
2.
Rain forms from water vapour in the air.
Write the name of the change from water vapour to liquid.
Condensation
Question 4: This model of the water cycle will help you to answer the following questions:
1. Where is water evaporating into the air?
a. From A to B
b. From C to D
c. From B to C
2. What does heat from the sun cause liquid water to do?
a. Travel deeper into the soil
b. Falls from clouds as rain
c. Evaporate into the air.
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Question 4: Solids, liquids and gases
1.
Megan has three cups.
There is a solid in one cup, liquid in another, and gas in another.
Megan writes a description of what is in each cup.
Draw THREE lines to match solid, liquid and gas to the best description of what
is in each cup.
2.
Megan’s teacher says gases spread out to completely fill up any container.
Write yes or no in each row to complete the table.
Do they spread out to
completely fill up any container?
Gases
yes
Liquids
No
Solids
No
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Question 5: Read each statement and circle the most appropriate answer.
1. The process by which a liquid turns into gas is called:
a. Boiling
b. Evaporation
c. Condensation
d. Melting
2. Temperature at which water starts to boil:
a. 0o C
b. 35o C
c. 37o C
d. 100o C
3. When water drops from on the outside of a cold can, it is called:
a. Boiling
b. Evaporation
c. Condensation
d. Melting
4. For evaporation to take place, ______________ must be present.
a. Heat energy
b. A huge container
c. Cold air
d. Cold energy
5. State of matter with a fixed/definite shape:
a. Solid
b. Liquid
c. Gas
d. All of the above
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6. When ice reaches its melting point, it turns to __________.
a. Ice
b. Liquid
c. Steam
d. Water vapour
7. If an object has its own shape and feels hard. It is:
a. Liquid
b. Gas
c. Solid
d. All of the above
8. Water freezes at
a. 100 degrees C
b. 0 degrees C
c. 20 degrees C
d. 212 degrees C
9. Water vapour is a :
a. Solid
b. Liquid
c. Gas
d. Both liquid and solid.
Section C: Physics:
Question1: Answer the following questions:
1. How are shadows formed?
When an object blocks light
2. What is a light meter?
A device that measures light intensity.
3. How can we see objects?
When the light hits the surface of an object, it will be reflected and enters our eyes.
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Question 2: Write the name of each material in the correct box. Give examples:
Materials
Objects that allow light to
Examples
Glass ….
Transparent
pass through.
Tissue ….
Objects that allow some light
to pass through
Translucent
Wood …
Objects that does not let light
to pass through
Opaque
Question 3: Fill in the blank with a word from the box below:
The Sun formulates the longest shadows at the beginning and end of the day, when the Sun is
lowest in the sky.
The Sun formulates the shortest shadows at midday, when the Sun is highest in the sky.
Longest shadows
Shortest shadows
Question 4: Look at the diagram of the two surfaces.
a. Which surface is rough? And which surface is smooth?
Rough: B
Smooth: A
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b. Explain which one is producing a clear image? Why is the other one not producing a
clear image?
Surface A produces a clear image, because smooth surfaces reflect light very well.
Surface B will not produce a clear image, because rough surfaces reflect light in all directions.
Question 5: Tick ONE box in each row:
Material
Some light passes through
No light passes through
Tissue paper
√
Greaseproof paper
√
Glass
X
X
Clear plastic
X
X
Cardboard
√
Foil
√
Wood
√
Question 7: List the planets in order from the closest to the furthest from the Sun:
Mercury- Venus- Earth- Mars – Jupiter- Saturn- Uranus- Neptune
Question 8: Draw two arrows on the diagram below to show the direction the light travels
so that a person on the Earth can see the Moon.
Question9:
Josh is investigating shadows. He places a block on the floor. He holds a lamp and
looks at the shadow the block makes.
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1.
Look at the pictures below.
Which picture shows the correct length and direction of the shadow made
by the block?
Tick one.
2.
Why does a shadow form when Josh shines the light on the block?
Tick one.
The block is grey and shiny.
The block is smooth and rigid.
The block is solid and opaque.
The block is hard and
transparent.
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3. Josh investigates if the
distance he puts the lamp from
the block affects the length of
the shadow on the floor.
Josh records his results in the
table below.
Distance of lamp
from block (cm)
Length of block's
shadow (cm)
5
7
10
9
15
12
20
14
25
17
Describe the relationship between the distance of the lamp from the block and
the length of the shadow.
The smaller the distance between the object and the light, the larger the shadow.
Question 10:
1.
The diagram shows the Sun, Earth and Moon (not drawn to scale).
Write Sun, Moon and Earth in the correct boxes on the diagram.
2.
Two orbits are shown.
Write the time taken, in days, for each orbit.
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Question 11:
In daytime it is light.
At night it is dark.
Give two reasons why this happens.
Draw it using the diagram below.
DRAW HER
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Question 12: The Earth
Sarah and Jack are using two different sized balls as models of the Sun and Earth.
1. The Earth spins on its axis.
Describe ONE other way the Earth moves in space.
The Earth orbits around the Sun.
How many times does the Earth spin on its axis in a day?
Tick ONE box.
1
2.
7
24
28
365
Jack is now using the globe as a model of the Earth.
He uses the torch as a model of the Sun.
Three points A, B and C are marked on the globe.
The arrows in the picture show the way Jack turns the model of the Earth.
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When the model Earth is in the position shown in the picture, what times of day
are shown at A, B and C?
Choose ONE of the words below to complete each sentence.
Sunrise
midday
Sunset
afternoon
midnight
One has been done for you.
At A it is midnight.
At B it is
Sunrise
At C it is
Midday
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Question 13: The Earth
Complete the following sentences.
The Earth spins on its axis once every 24 hours.
The half of the Earth facing away from the Sun is in darkness. Night time.
It takes about 365 days for the Earth to orbit the Sun .
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