Physics
Biology
Chemistry
Space
Earth Science
100

 What is gravity?

This force keeps us on the ground

100

What is the cell?

The basic unit of life

100

What is water?

H₂O is the chemical formula for this substance.

100

What is Mercury?

The planet closest to the Sun.

100

What is the crust?

The outermost layer of the Earth.

200

What is the ohm?

The unit of electrical resistance.

200

What is photosynthesis?

The process by which plants make food using sunlight.

200

What is the nucleus?

The center of an atom.

200

What is the Milky Way? 

Our galaxy is called this

200

What is magma?

Molten rock beneath the Earth’s surface.

300

Who is Albert Einstein?

This physicist developed the theory of relativity

300

What is DNA?

The molecule that carries genetic information.

300

Who is Dmitri Mendeleev?

The periodic table was developed by this scientist.

300

Who is Neil Armstrong?

The first human to walk on the Moon.

300

What is condensation?

The process by which water vapor turns into liquid.

400

What is 300,000 km/s?

The speed of light is approximately this many km/s.

400

What is the heart?

This organ pumps blood throughout the human body.

400

What is an acid?

A substance with a pH less than 7.

400

What is Mars?

This planet is known as the Red Planet.

400

What is the Richter scale?

This scale measures earthquake strength.

500

What is Newton’s Third Law?

The law stating that for every action, there is an equal and opposite reaction

500

Who is Charles Darwin?

The scientist who proposed the theory of evolution by natural selection.

500

What is hydrogen?

The lightest element on the periodic table.

500

What is gravity?

The force that keeps planets in orbit around the Sun.

500

What is the Pacific Ocean?

The largest ocean on Earth.

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