Physics
Biology
Chemistry
Earth Science
Space Science
100

What force keeps us on the ground?

Gravity

100

What is the process by which plants make food?

Photosynthesis

100

What is the chemical symbol for water?

H2O

100

What layer of Earth do we live on?

The crust

100

What is the nearest star to the Earth?

The sun

200

What metal element has the symbol Al?

Aluminium

200

Which organ in the human body pumps blood?

The heart

200

What is the first element in the periodic table?

Hydrogen

200

What do we call molten rock that erupts from a volcano?

Lava

200

Which planet is nearest to the sun?

Mercury

300

How fast does light travel in a vacuum in m/s?

300,000,000

300

What is the smallest unit of life?

Cell

300

What do we call it when a gas turns into a liquid?

Condensation

300

What type of rock is formed from cooled magma or lava?

Igneous rock

300

What do we call a group of stars that form a pattern in the night sky?

Constellation

400

Which scientist came up with the three laws of motion?

Isaac Newton

400

What gas do plants release during photosynthesis?

Oxygen

400

What is the pH of pure water?

7

400

What is the process called where water changes from a liquid to a gas?

Evaporation

400

What is the name of the galaxy that contains our Solar System?

Milky Way

500

What is the term for the bending of light when it enters glass or water?

Refraction

500

What is the name of the molecule that carries genetic information in living things?

DNA

500

What element is common to all living things? 

Carbon

500

What element makes up most of the Earth's core?

Iron

500

What object in space is so dense that even light cannot escape?

Black hole