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Gravity
The heat created when you rub your hands together is an example of:
friction
Who said "what goes up, must come down"?
Isaac Newton
The rate at which a moving object travels
Speed
what is the name of Ms. Vickers cat?
Biscuit
A push or a pull that makes an object move.
Force
Pushes and pulls are examples of:
force
Mass
In a magnet, do opposite poles attract or repel?
attract
All matter is made of tiny particles called:
atoms
True or false: applying force to an object always causes it to move
false
How is gravity helpful to us?
Gravity keeps our feet on the ground and keeps us from floating away
The force that acts in an opposite direction of movement. Slows down or stops movement
Friction
Who created the first automatic lubricator that sprayed the right spots of an engine to keep trains running?
Elijah McCoy
Any change in speed
Acceleration
If you throw a ball in the air, what pulls it back down?
gravity
A force that can push together or pull apart certain metals
Magnetism
Does carpet have more or less friction than a smooth glass surface?
more
Give 2 examples of friction
Rubbing your hands together to make heat, rubbing sticks together to create a fire
True or false: Newtons are a unit of measurement
True
The most powerful parts of a magnet are the ends. These ends are called:
North and south poles
How can you make a fire by rubbing sticks and stones together? What is this called?
friction creates heat, which happens when you rub sticks and stones together
Name Newton's Laws of Motion
1. An object at rest will remain at rest unless acted upon by a stronger force
2. The greater the mass, the greater the force needed to move it.
3. For every action, there is an equal and opposite reaction.
Name 3 metals that are magnetic
Iron, steel, nickel, cobalt
Explain the difference between speed and acceleration
Speed is how fast or slow you are going, acceleration is the rate that you get to these speeds