2.1 What is energy?(Final)

Choose the highest amount of energy from these values.

• 20 J

• 20 kJ

• 2000 kJ

• 0.2 kJ

• 2000 J

Choose the lowest amount of energy from these values.

• 20 J

• 20 kJ

• 2000 kJ

• 0.2 kJ

• 2000 J

How many joules are in 0.2 kJ?

• 2000 J

• 2 J

• 200 J

• 20 J

The energy used to generate electricity may have been stored in a fuel such as coal or oil.

• True

• False

The energy in the food someone eats shouldn't equal the energy they need for the activities that they do.

• True

• False

Energy is measured in joules or kilojoules, its abbreviated as..................... and......................respectively.

• j / kj

• J / KJ

• j / Kj

• J / kJ

Food is the only energy store.

• True

• False

About three-quarters of the energy that you need every day is for processes in your body like ......................

• breathing

• sitting

• cycling

• standing

Energy and work are measured in

• newtons

• joules

• hertz

• kilograms

Match the following

• potential energy related to an object's height

• gravitational potential energy

• the energy an object has due to its motion

• energy

• energy associated with objects that can be compressed or stretched

• potential energy

• energy that results from an object's position or shape

• elastic potential energy

• the abilit to do work or cause change

• kinetic energy