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Force
Non-Contact Force
Contact Force
Electric and Magnetic Force
100
What is a push or pull that acts on an object?
What is a force?
100
There has to be contact between two surfaces, or contact with a gas or a liquid for what to work?
What is friction?
100
What is a force that requires two pieces of matter to touch?
What is contact force?
100
What forces act between objects that are electrically charged?
What is electrically charged?
200
What is strength measured in units called?
What is newtons?
200
What is a force that acts at a distance?
What is non-contact force?
200
What is the force that results when two materials rub against each other or when their contact prevents sliding?
What is Friction?
200
What are attracted to each other and tend to move toward each other?
What is oppositely charged objects?
300
What can make an object speed up, slow down, or change direction when an object is already moving?
What is forces?
300
What are three examples of non-contact forces?
What is gravity, electric forces, and magnetic forces?
300
What can cause friction?
What is air and water?
300
what happens when objects have the same charge?
They repel
400
What are two types of forces?
What is Contact Forces and Non-Contact Forces?
400
What is the force of attraction between any two objects?
What is gravity?
400
What has least amount of friction Ice or grass?
What is Ice?
400
What do magnets pull strongly on?
Metals such as iron, cobalt, and nickel
500
Where does gravity pull objects toward?
What is Earth's center?
500
What does every magnet have?
North and south pole