Energy
What is energy?
The ability to do work or cause change
What simple machine is a stiff bar that rests on a fulcrum to lift or move things?
Lever
What is a push or a pull called?
Force
What can you turn off when you leave a room to save energy?
Lights
What happens when you rub your hands together quickly?
Friction creates heat energy
What type of energy comes from the sun?
Solar energy
What simple machine is made of a wheel attached to a rod or axle?
Wheel and axle?
True or False: Forces can make objects move, stop, or change direction.
True
What can you do with electronic devices to save energy when you're not using them?
Unplug them
What type of energy do we use to power a flashlight?
Electrical energy from batteries
What type of energy is used to light a lamp?
Electrical energy
What simple machine is made of a flat, slanted surface that helps move objects up or down?
Inclined plane
What force pulls objects toward the ground?
Gravity
Name one way to use less water when brushing your teeth.
Turn off the tap while you brush your teeth
What type of energy do plants use to grow?
Solar energy (or light energy)
What type of energy do we hear as sound?
Sound energy
What is a simple machine that helps lift things by wrapping a rope around a wheel?
Pulley
What force slows down a rolling ball when it touches the ground?
Friction
Why should we encourage people around us to save energy?
Because everyone’s actions together make a bigger difference
How does electricity get to our homes?
Electricity travels through power lines.
What type of energy is used when you stretch and release a rubber band?
Elastic energy
What are the three types of simple machines, and name an example for each one.
Lever, Wheel and axle, Inclined plane
Name 3 different types of force, and an example of each
Teacher to check
Why is saving energy important for the planet?
It helps reduce pollution and conserves natural resources
What happens to energy when you eat food?
Your body turns the food’s chemical energy into energy for movement and heat.