Friction
This type of friction occurs when an object slides across a surface.
What is sliding friction?
This force pulls objects toward the center of the Earth.
What is gravity?
A light bulb transforms electrical energy into this type of energy
What is light energy?
This simple machine uses a rope wrapped around a wheel to lift objects.
What is a pulley?
This is the energy an object has because it is moving.
What is kinetic energy?
This force always acts in the opposite direction of motion.
What is friction?
This scientist discovered gravity after observing a falling apple.
Who is Isaac Newton?
The form of energy stored in a medicine
What is chemical energy
A seesaw is this type of simple machine.
What is a lever?
This energy is stored in food and batteries.
What is chemical energy?
This kind of friction keeps an object at rest until a force is strong enough to move it.
What is static friction?
Factors affecting the effect of gravity on an object
Distance and mass
In an air fryer, electrical energy is transformed into this.
What is heat energy?
An inclined plane wrapped around a bolt is an example of this simple machine.
What is a screw?
Energy stored due to an object’s height above the ground.
What is potential energy?
This type of friction makes wheels and ball bearings useful.
What is rolling friction?
Imagine the Earth lost its gravity. What will happen to objects on it?
All objects will float in the air.
Plants transform light energy from the sun into this type of energy
Chemical energy
This simple machine is a slanted surface that helps move objects upward.
What is an inclined plane?
It is an energy produced by vibrating objects
What is sound energy?
Rubbing your hands together produces this form of energy due to friction.
What is heat (thermal energy)?
True or False. Gravity affects all objects in the universe.
True
The type of energy that is always produced in an energy transformation
What is heat energy?
Scissors use two simple machines at once—levers and this sharp simple machine.
What is a wedge?
It is the energy possessed by moving electrons that lights the bulb, works all appliances.
What is electrical energy?