Space
Water
Weather
Geological
Nuclear
100
When creatures from another planet attack us.
What is an alien invasion?
100
Water that falls from the sky.
What is rain?
100
Rain. Thunder. Lightning.
What is a storm?
100
When the ground shakes.
What is an earthquake?
100
When countries fight using nuclear weapons.
What is nuclear war?
200
A piece of rock flying through space.
What is an asteroid?
200
An enormous wave. Often caused by an earthquake.
What is a tsunami?
200
Air moving very fast.
What is wind?
200
When lots of snow goes down a hill or mountain very quickly.
What is an avalanche?
200
The worst thing that can happen at a nuclear power plant. The fuel gets too hot and burns.
What is a meltdown?
300
A big chunk of ice and dust flying through space. It often has a "tail."
What is a comet?
300
When water fills houses, streets, and cars. Sometimes you might only be able to travel around by boat.
What is a flood?
300
A funnel of wind. It can destroy houses and carry away animals, cars, and people.
What is a tornado?
300
A mountain that can explode.
What is a volcano?
300
The dangerous energy given off by nuclear fuel and nuclear waste.
What is radiation?
400
The big hole left when an asteroid hits the earth.
What is a crater?
400
A fast-moving disturbance in water. A tsunami is an example of this.
What is a wave?
400
A very large storm with very strong winds. These are found in the Caribbean.
What is a hurricane?
400
Grey dust. A lot of this gets thrown into the air by a volcano.
What is ash?
400
The Japanese nuclear power plant that melted down after the earthquake and tsunami.
What is Fukushima?
500
When a star explodes.
What is a supernova?
500

A long period of time with non-stop rain. This often happens in countries like Indonesia or Thailand

Monsoon

500
The centre of a hurricane.
What is the eye?
500
The hot melted rock that comes out of a volcano.
What is lava?
500
The most famous nuclear accident in history. It took place in the 1980's.
What is Chernobyl?
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