Grade 7 Revision Final Exam Semester 1 (2023-2024)

Which statement is correct about how scientists worked out how old the earth is?

• It is about 450 million years old.

• It is 54,00 million years old.

• It is 45,00 million years old.

• It is 54,00 million years old.

which are the properties of metals

• malleable

• low heat transfer

• dull

• conductor of electricity

• shiny

In which stage of the water cycle do precipitation, condensation and evaporation occur?

a

b

c

precipitation

condensation

evaporation

Some scientists believe that viruses are not considered living things, which of the following is the reason:

• They don’t have all 7 characteristics of living things.

• They live in the air

• They can replicate

• They are made of cells

Some scientists believe that viruses are considered living things which of the following is reason:

• They don’t have all 7 characteristics of living things.

• They live in the air

• They can replicate

• They are made of cells

Use the following dichotomous key to classify these four organisms. Write the correct description in the second column after letters (A, B, C or D)

d

c

b

a

Greenland shark

basking shark

Sea bream

John Dory

which are the properties of non-metals

• sonorous

• low heat transfer

• dull

• non- conductor of electricity

• shiny

label the correct gasses for the test and results produced

a

b

c

hydrogen

oxygen

carbon dioxide

dissipate mean when energy is

label the earth structure

d

c

b

a

crust

mantle

outer core

inner core