7th Grade Cambridge Science End of Semester Test Review

When white light goes through a prism, the light is refracted and split into the colours of the

rainbow.

What is the name of this process?

(a)  

Here is some information about a loaf of bread.

The total mass of protein, carbohydrate, fat, dietary fibre and salt in the table does not add up to 100 g.

What substance makes up the remaining mass of bread?

(a)  

Here is some information about a loaf of bread.

The total mass of protein, carbohydrate, fat, dietary fibre and salt in the table does not add up to 100 g.

Why does the body need a supply of protein?

(a)  

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Here is some information about a loaf of bread.

Which component in the bread provides most of this energy?

(a)  

Chemical formulae are used to model chemical compounds.

Which is the chemical formula of sulfuric acid?

• O₄H₂S

• SH₂O₄

• H₂SO₄

• O₂H₄S

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The diagram shows a drop of blood as seen with a microscope.

One type of blood cell carries oxygen.

Name this type of blood cell.

(a)  

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Look at the diagram. It shows the addition of different colours of light. Complete the diagram by writing the correct colour in each box.

(a)  

Lily investigates two filters. Look at the diagram.

What does Lily see on the screen?

• blue light

• no light

• white light

• yellow light

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Marta grows tomato plants in her greenhouses.

Name the process plants use to make their own food.

(a)  

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Marta grows tomato plants in her greenhouses.

Marta adds more carbon dioxide gas into the greenhouses.

Explain why.

(a)  

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