Physics
Chemistry
Biology
Earth Science
Space Science
100

This force is responsible for pulling objects toward each other.

What is Gravity?

100

This famous table organizes all known elements by their properties.

What is the Periodic Table of Elements?

100

The human body is made up of approximately 37 trillion of these.

What are Cells?

100

This is the only known planet in the universe that currently supports life.

What is Earth?

100

The universe is made up of billions of these, which are massive systems containing billions of stars.

What are Galaxies?

200

True or False: Energy can be created if enough force is applied.

What is False? (Energy cannot be created or destroyed).

200

This scale is used to measure how acidic or basic a substance is.

What is the pH Scale?

200

This body system is responsible for transporting oxygen and nutrients.

What is the Circulatory System?

200

These three layers—crust, mantle, and core—make up this planet.

What is Earth?

200

This is the name of our solar system's central star that the planets orbit.

What is the Sun?

300

Light is unique because it behaves as both a wave and as these particles.

What are Photons?

300

He is the scientist credited with creating the first recognized Periodic Table.

Who is Dmitri Mendeleev?

300

This is the specific level of organization between "Cells" and "Organs."

What are Tissues?

300

This theory explains how the movement of Earth's surface leads to earthquakes and volcanoes.

What is Plate Tectonics?

300

This historic 1969 mission was the first to successfully land humans on the Moon.

What is Apollo 11?

400

This branch of physics specifically studies how objects move and interact.

What is Mechanics?

400

This process involves matter changing state from a solid directly to a gas.

What is Sublimation?

400

This system acts as the "control center" for all bodily responses and actions.

What is the Nervous System?

400

This cycle moves water through the stages of evaporation, condensation, and precipitation.

What is the Water Cycle?

400

Scientists use these two types of tools—one on Earth and one in flight—to explore the universe.

What are Telescopes and Spacecraft?

500

This groundbreaking theory by Albert Einstein changed how we understand time, space, and gravity.

What is Relativity?

500

These are the two or more atoms that combine chemically to form a new substance.

What are Compounds?

500

These are the three things all living organisms must have to survive.

What are Energy, Water, and Nutrients?

500

These two processes work together over long periods of time to physically shape the Earth's surface.

What are Weathering and Erosion?

500

These regions of space have gravity so strong that not even light can escape from them.

What are Black Holes, or theoretical Gravastars, Wormholes and White Holes