Ch. 3 - Energy, Heat and Energy Transformations

The ability to do work is called...

• velocity

• energy

• power

Energy is measured in units called?

• joules

• pounds

• meters

The energy associated with a moving object is called...

• kinetic energy

• elastic potential energy

• gravitational potential energy

Kinetic energy increases as

• mass increases and velocity decreases

• mass decreases and velocity increases

• both mass and velocity increase

The total kinetic and potential energy of AN OBJECT is called

• thermal energy

• mechanical energy

• chemical energy

The total kinetic and potential energy of THE PARTICLES IN AN OBJECT is called

• thermal energy

• mechanical energy

• chemical energy

An example of an object with stored chemical energy is

• a microwar

• a peanut butter and jelly sandwich

• light

Moving water can be used to help produce electricity because

• most forms of energy can be transformed into other forms of energy

• potential energy energy can be converted into kinetic energy, but not vice versa

• kinetic energy energy can be converted into potential energy, but not vice versa

What type of energy transformation is taking place when natural gas is used to heat your water in a water heater?

• chemical energy into thermal energy

• thermal energy into mechanical energy

• mechanical energy into electromagnetic energy

When you rub your hands together on a cold day, you use friction to transform..

• thermal energy into nuclear energy

• nuclear energy into electrical energy

• mechanical energy into thermal energy