Motion
A force caused when two objects rub against one another.
What is friction.
When you drop an object, this force pulls it toward the ground.
What is gravity.
What kind of materials does magnets attract?
What is metal.
Does an item with strong friction have a rough or smooth surface?
The pulling force that keeps us on Earth is ______________.
What is gravity
What force is created when objects produce a charge?
What is electrostatic force.
A natural force caused by the shifting of the ground, and resulting in a great movement of water.
What is a tsunami.
Kicking is an example of a _________ force.
What is a push force.
What type of surface texture creates less friction?
What is a smooth surface.
When two objects have similar charges they _____ one another.
What is repel.
A natural force that is caused by a release of electricity from the atmosphere, seen as a bright light.
Lightning.
Name a material that has weak friction.
Many possible answers: ice, class floor.
What would happen if gravity didn't exist?
What is everything would float.
Name one type of metal that magnets will attract.
What is nickel, iron, cobalt or steel.
True or False. The size of the magnet determines how strong it is.
What is false.
Give an example of how you might use a push force at recess.
Possible Answers: Pushing a swing, kicking a ball, throwing a frisbee.
Give an example of when humans want to increase friction for safety reasons.
Many answers: wearing boots in winter, boots with tread, carpet on stairs.
Name two types of forces we've discussed in class.
What is physical/muscular, gravity, magnetic force, friction, and electrostatic force.
Balloons with the same charge will _____ each other.
What is repel.