IMO Practice Test — Energy & Its Forms
6 Questions • 12 min • Olympiad level
12:00
Question 1 of 6
medium
Energy stored in food, batteries or fuel, ready to be used, is called…
Sound
Light
Stored (potential) energy
Colour
Explanation: Energy waiting to be used is stored energy.
Question 2 of 6
medium
A campfire gives out two forms of energy at once. They are…
Colour and smell
Sound and food
Wind and rain
Heat and light
Explanation: A fire gives out both heat and light energy.
Question 3 of 6
hard
Wind and flowing river water can also make electricity. Their energy first came from the Sun, which causes…
Colours
Earthquakes
Winds and the water cycle
Rocks
Explanation: The Sun drives winds and the water cycle that we tap for power.
Question 4 of 6
hard
LED bulbs are better than old bulbs because for the same light they use…
Less electricity
More electricity
More water
More fuel
Explanation: LEDs give the same light using less energy.
Question 5 of 6
hard
A ball at the top of a hill has stored energy because of its…
Smell
Colour
Name
High position
Explanation: A raised ball has stored energy due to its height.
Question 6 of 6
hard
A cyclist pedalling a dynamo lights a lamp. The change is muscle energy to electricity to…
Rock
Food
Sound
Light
Explanation: A dynamo turns motion into electricity, then light.