Module 4 - L2- Describing Energy Revision

What type of energy transformation occurs when a child uses a swing?

• thermal energy to mechanical energy

• gravitational potential energy to kinetic energy

What type of energy transformation occurs when an object is burned?

• chemical potential energy to thermal energy and radiant energy

• radiant energy to chemical potential energy and thermal energy

The ____________energy of an object depends on its mass and height.

• Gravitational Potential

• Kinetic

A________is a unit of measure of all forms of energy.

• Newton(N)

• Joule (J)

Energy is the __________ to cause __________.

• ability, change

• power, motion

• capacity, work

• force, action

Chemical potential energy is energy that is due to __________ __________.

• Chemical potential energy

• chemical bonds

• nuclear reactions

• thermal energy

The energy of food and other fuels is ______ energy.

• Potential

• Kinetic

• Thermal

• Electrical

Which is the type of energy used when burning gasoline?

• Magnetic

• Electrical

• Nuclear

• Chemical

anything around you in which you can imagine a boundary

• energy

• system

• joules

• mechanical advantage

• efficiency

Kinetic energy (joules) = ½ mass (kg) x [speed (m/s)]²

A ball of 5kg is traveling at 20m/s²

• 100 joules

• 1000 joules

• 400 joules

• 2000 kgm/s2