Natural world
Chemistry
Physics
Random
Biology
100

This habitat is found on every continent

Desert

100

I am the first chemical element in the periodic table. The most common element in the universe.

Hydrogen

100

This is made of metal, and quite attractive to some materials.

Magnet

100

A famous frizzy haired scientist, responsible for E = mc^2 and relativity.

Albert Einstein

100

The process by which plants get energy from the sun, starting with "P".

Photosynthesis

200

A common household process, this is beneficial to the environment starting with "R"

Recycling

200

A colourless and non-flammable substance, used as a cooling agent, it is the solid form of carbon dioxide.

Dry Ice

200

A type of force, important for cars to accelerate, turn or stop, and weaker when its wet. 

Friction

200

A form of energy, it travels at 330 metres per second in air.

Sound

200

Types of animals, like crocodiles, that are cold blooded.

Reptiles

300

Sandstone, limestone and shale are all types of this type of rock.

Sedimentary

300

A common compound, too much of this in the soil makes it hard for plants to grow.

Salt

300
This is high energy radiation that is fast enough and powerful enough to pass through humans, allowing bone and teeth images to be shown. 

X-rays

300

A digestive juice made by the liver, I can be a bit greenish or yellowish

Bile

300

The name of the tiny structures in the lungs where oxygen and carbon dioxide are exchanged

Alveoli

400

A natural resource that is burned, I'm one of Australia's most lucrative exports to other countries.

Coal

400

A colourless substance, I am solid carbon dioxide, but better known as what?

Dry Ice

400

A famous astronomer, I was imprisoned for arguing that the planets revolve around the sun.

Galileo Galilei

400

A native Australian mammal, whose males are quite venomous

Platypus

400

Humans have 46 of these, beginning with "C"

Chromosomes

500

What is the name of the largest layer of the Earth, which is made of solid rock and extends to a depth of about 2,890 km

Mantle

500

A type of reaction, like burning, that releases energy usually in the form of heat.

Exothermic 

500

In the eye, transparent and used to focus light rays

Lens

500
This is part of Newton's first law, the tendency of an object to keep doing what its doing.

Inertia

500

A change in DNA structure, often thought of as bad, but is necessary.

Mutation