Vocab
What is Speed?
The rate at which a moving object travels.
Why would we want to somehow reduce friction?
To change how fast an object is moving.
A force is a push or pull that can make an object move.
True
What happens when you rub two sticks together to start a fire?
Friction
The _______ the force, the more movement it can produce.
Greater/smaller)
greater
Simple machines make work harder.
False.
The most powerful parts of the magnet at the end are called:
North and South Pole
What is the force of attraction between two objects?
Gravity.
All matter is made of tiny particles called atoms.
true.
What is Mass?
how much matter is in an object
What is a force that can push together or pull apart certain metals?
Magnetism.
Gravity is the force of attraction between two objects.
True
What is gravity?
How is gravity helpful to us?
It keeps our feet on the ground.
What is the difference between speed and acceleration?
Speed is the rate at which an object travels, acceleration is any change in speed.