Grade 7 Science Diagnostic Exam

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1 / 25

What is the process called when **water vapor turns into liquid water**?

Condensation

Evaporation

Transpiration

Precipitation

2 / 25

What is the primary product of **photosynthesis** that provides energy for the plant?

Water

Glucose

Oxygen

Carbon dioxide

3 / 25

What is the difference between **weather** and **climate**?

Climate is studied by meteorologists, while weather is studied by climatologists.

There is no difference; the terms are interchangeable.

Weather is affected by the Sun, but climate is not.

Weather describes short-term atmospheric conditions, while climate describes long-term weather patterns.

4 / 25

In a food chain, what is the role of a **producer**?

An organism that breaks down dead organic matter.

An organism that eats other animals.

An organism that eats only plants.

An organism that makes its own food.

5 / 25

Why does the Sun appear so much larger and brighter than other stars?

It is much closer to Earth than any other star.

It reflects light from the other stars, making it appear brighter.

It is the only star that produces its own light.

It is a larger and hotter star than any other star in the universe.

6 / 25

What is the function of the **ribosome** in a cell?

To produce proteins.

To store genetic information.

To produce energy for the cell.

To control all cell activities.

7 / 25

A student wants to measure the volume of an irregularly shaped rock. Which tool should they use?

A ruler

A weighing scale

A thermometer

A graduated cylinder

8 / 25

What is the main role of the **lungs** in the human body?

To exchange oxygen and carbon dioxide.

To filter blood.

To pump blood.

To digest food.

9 / 25

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

To break down food using acid and enzymes

To absorb water and minerals

To chew food

To pump blood

10 / 25

In a food web, what is the term for an organism that consumes both plants and animals?

Herbivore

Carnivore

Omnivore

Producer

11 / 25

Which of the following describes a characteristic of the **troposphere**?

It is the layer where all weather phenomena occur.

It contains the ozone layer that protects Earth from ultraviolet radiation.

It contains the ionosphere, which reflects radio waves.

It is the outermost layer of the atmosphere.

12 / 25

What is the primary role of the **heart** in the human circulatory system?

To pump blood throughout the body.

To filter waste products from the blood.

To exchange oxygen and carbon dioxide with the air.

To digest food and absorb nutrients.

13 / 25

The **rock cycle** describes the continuous process of how rocks change. What type of rock is formed from compacted layers of sand and silt?

Igneous rock

Metamorphic rock

Magma

Sedimentary rock

14 / 25

What is the main difference between a **plant cell** and an **animal cell**?

Animal cells have a nucleus, but plant cells do not.

Plant cells have a cell wall and chloroplasts, which animal cells do not.

Plant cells are much smaller than animal cells.

Animal cells have a large central vacuole, while plant cells do not.

15 / 25

What is the main function of the **nervous system** in the human body?

To transport oxygen and nutrients to cells.

To coordinate the body's actions and transmit signals between different parts.

To provide a framework and support for the body.

To break down food and absorb nutrients.

16 / 25

Which of the following is the best example of a **chemical change**?

Burning a piece of wood.

Dissolving salt in water.

Melting an ice cube into water.

Tearing a piece of paper.

17 / 25

Which of the following is an example of **convection**?

The Sun's rays warming the Earth.

The rising of hot air and the sinking of cooler air.

Heat traveling along a metal spoon placed in hot soup.

Touching a hot stove and feeling the heat.

18 / 25

Which component of an atom carries a positive charge?

Electron

Nucleus

Proton

Neutron

19 / 25

Which state of matter has a **definite shape and definite volume**?

Liquid

Solid

Plasma

Gas

20 / 25

The **Law of Conservation of Energy** states that:

Energy can be destroyed but not created.

Energy can be created and destroyed.

Energy can be created but not destroyed.

Energy cannot be created or destroyed, but can be converted from one form to another.

21 / 25

Which of the following describes the process of **meiosis**?

A process of cell division that results in two identical daughter cells.

The process by which a plant makes its own food.

The process of a cell growing and developing before it divides.

A type of cell division that produces four genetically different daughter cells with half the number of chromosomes.

22 / 25

Which of the following is a characteristic of a **physical property** of matter?

It can only be observed by changing the substance's chemical identity.

It results in the formation of a new substance.

It describes how a substance reacts with other substances.

It can be observed or measured without changing the substance's chemical composition.

23 / 25

Which layer of the Earth is a solid, metallic sphere at the center?

Crust

Mantle

Outer core

Inner core

24 / 25

How is the speed of an object calculated?

Distance multiplied by time.

Mass multiplied by acceleration.

Time divided by distance.

Distance divided by time.

25 / 25

Which of the following is an example of an **abiotic factor** in an ecosystem?

A mushroom

A rock

A plant

A lion

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Grade 7 Science Diagnostic Exam

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