Chapter 1: What Is Energy Flashcards
How much is 1 kJ in J
1 KJ = 1000 J
Why do children need more energy than they use for daily activities?
Because they’re still growing
Are Kilocalories and calories different?
No
How much energy is in 1 kilocalorie
4.2 kilojules
What is the type of energy from food
chemical stores
What is gravitational potential store?
A type of energy when there is potential energy from gravity
e.g something held up from the ground (potential energy from it falling
What is elastic store
A type of energy stored elastically
e.g springs which can compress and then shoot up once its not squashed
What is kinetic store?
Its the energy stored in fast moving objects
What is thermal store?
Its the energy stored from heat energy
What is the energy transfer called when you turn on a flashlight?
Electric current
What are the two types of energy transferred from a lit candle?
Heat and light
What are three types of energy which cannot be stored?
Kinetic, sound, light
What is the type of energy from the sun?
Light and radiation
What is the process in the sun called?
Nuclear fusion
What type of energy is the sun a store of?
Nuclear store
