Astronomy
Biology
Chemistry
Physics
Earth Science
100

This planet is known as the "Red Planet."

What is Mars?

100

The process by which plants make food using sunlight.

What is photosynthesis?

100

The chemical symbol for gold.

What is Au?

100

The force that keeps us on the ground.

What is gravity?

100

The outermost layer of the Earth.

What is the crust?

200

This galaxy is closest to the Milky Way.

What is the Andromeda Galaxy?

200

The powerhouse of the cell.

What is the mitochondrion?

200

This element is essential for the production of thyroid hormones.

What is iodine?

200

This scientist formulated the laws of motion.

Who is Isaac Newton?

200

This scale measures the magnitude of earthquakes.

What is the Richter scale?

300

The largest planet in our solar system.

What is Jupiter?

300

This molecule carries genetic information in living organisms.

What is DNA?

300

The pH level of pure water.

What is 7?

300

This phenomenon describes the bending of light as it passes through different mediums.

What is refraction?

300

The most abundant gas in the Earth's atmosphere.

What is nitrogen?

400

This term describes a star that suddenly increases greatly in brightness due to a catastrophic explosion.

What is a supernova?

400

The largest organ in the human body.

What is the skin?

400

The scientist who created the periodic table.

Who is Dmitri Mendeleev?

400

The unit of electrical resistance.

What is the ohm?

400

This process involves the movement of water from the surface to the atmosphere and back.

What is the water cycle?

500

The first human-made object to land on the moon.

What is Luna 2?

500

This type of cell in the human body does not have a nucleus.

What is a red blood cell?

500

This law states that the volume of a gas is inversely proportional to its pressure.

What is Boyle's Law?

500

This principle states that energy cannot be created or destroyed, only transformed.

What is the law of conservation of energy?

500

This theory explains the movement of Earth's lithospheric plates.

What is plate tectonics?

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