Grade 6 Science Diagnostic Exam

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1 / 20

What is the main difference between a mixture and a compound?

A mixture can be separated by physical means, while a compound requires chemical means.

A mixture has a fixed ratio of components, while a compound does not.

A mixture's components are chemically bonded, while a compound's are not.

A mixture can only be made of two substances, while a compound can be made of many.

2 / 20

What is the main function of the heart in the human body?

To pump blood throughout the body

To break down food

To filter waste from the blood

To produce hormones

3 / 20

The main source of energy for most ecosystems on Earth is:

Water

Wind

The Sun

Volcanoes

4 / 20

What is the basic unit of all living organisms?

The Tissue

The Cell

The Atom

The Organ

5 / 20

Why does the Earth experience day and night?

Because the Moon orbits the Earth

Because the Sun rises and sets

Because the Earth rotates on its axis

Because the Earth revolves around the Sun

6 / 20

What is the name of the path the Earth follows as it moves around the Sun?

Equator

Revolution

Axis

Orbit

7 / 20

When you shine a flashlight on a wall, what is the path of the light called?

A beam

A shadow

A wave

A ray

8 / 20

Which of the following is a renewable energy source?

Natural gas

Coal

Solar power

Oil

9 / 20

Which of the following is a producer in a food chain?

A rabbit

A cactus

A snake

A lion

10 / 20

Which of the following is an example of a chemical change?

Cutting wood

Water boiling

Paper burning

Ice melting

11 / 20

A substance that dissolves in another substance to form a solution is called the:

Solute

Solvent

Solution

Mixture

12 / 20

The force that pulls all objects towards the center of the Earth is called:

Magnetism

Gravity

Friction

Air resistance

13 / 20

What is the role of a decomposer in a food web?

To eat plants

To eat other animals

To produce its own food

To break down dead organisms and waste

14 / 20

Which of these objects would have the most gravitational force acting on it?

A feather

A bowling ball

A paperclip

A soccer ball

15 / 20

What is the function of the stomach in the digestive system?

To pump blood

To absorb water and minerals

To break down food using acid and enzymes

To chew food

16 / 20

Which of the following parts of a plant is responsible for absorbing water and nutrients from the soil?

The leaves

The roots

The flowers

The stem

17 / 20

What is the name of the system in the human body that allows us to breathe?

The Muscular System

The Nervous System

The Respiratory System

The Skeletal System

18 / 20

What is the process called when a liquid changes to a gas?

Evaporation

Freezing

Melting

Condensation

19 / 20

What happens to the particles of a substance when it changes from a solid to a liquid?

The particles lose energy.

The particles get closer together.

The particles stop moving.

The particles gain energy and move more freely.

20 / 20

Which of the following is the largest planet in our solar system?

Saturn

Mars

Jupiter

Earth

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Grade 6 Science Diagnostic Exam

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