Biology
Chemistry
Physics
Earth Science
Space Science
100

What system is responsible for transporting oxygen and nutrients in the body?

The circulatory system

100

What is H₂O?

Water

100

What is Newton’s First Law?

The law of inertia

100

What is the difference between weather and climate?

Weather = short-term; Climate = long-term patterns

100

What is the closest star to Earth?

The Sun

200

What organ acts as a filter for blood and helps remove waste?

The kidneys

200

What is pH a measure of?

Acidity or alkalinity

200

What is the unit of force?

Newton

200

What are the three main types of rocks?

Igneous, sedimentary, metamorphic

200

What is the name of a star explosion that releases a huge amount of energy?

A supernova

300

What system protects the body from infections and diseases?

The immune system

300

What is an exothermic reaction?

A chemical reaction that releases energy

300

What is Newton’s Second Law formula?

F = m × a

300

What is the outermost layer of Earth called?

The crust

300

What force keeps planets in orbit?

Gravity

400

What is DNA responsible for in living organisms?

Carrying genetic information

400

What is a mixture that is evenly distributed throughout and cannot be easily separated?

A solution

400

What element has the chemical symbol “O”?

Oxygen

400

What is the process called when rocks are broken down by wind, water, or ice?

Weathering

400

What is the name of our galaxy?

The Milky Way

500

What is the process plants use to make food?

Photosynthesis

500

What are the three subatomic particles?

Protons, neutrons, electrons

500

What is the formula for speed?

Speed = distance ÷ time

500

What natural disaster is caused by the sudden movement of tectonic plates?

An earthquake

500

What is a light year?

The distance light travels in one year