Simple Machines
Forces and Motion 1
Forces and Motion 2
Forces and Motion 3
Miscellaneous
100
Which one of these simple machines is a cylinder with an inclined plane wrapped around it.
a screw
100
What is motion?
Movement
100
What is a force?
A push or a pull
100
An object at rest will remain at rest unless what?
Acted upon by an outside force
100
Which law of motion is this?
Andy pushes his skates backward in order for his body to lunge forward.
Newton's Third Law of Motion
200
What simple machine would make this man's job easier?
An inclined plane
200
What would happen if there were no gravity on Earth?
Everything would float into outer space.
200
An object in motion will __________________ unless _______________________.
remain in motion unless acted upon by an outside force.
200
Two teams are playing kickball. Tommy kicks the ball where it rolls far into the outfield. Before anyone can get it, the ball stops. What made it stop?
Friction
200
How many classes of levers are there?
3 - 1st class, 2nd class, and 3rd class
300
How many simple machines are there?
6
300
Who formulated the three laws of motion?
Sir Isaac Newton
300
A baseball player hits a pop-up ball. The ball soars high into the air but eventually falls. What makes it fall?
Gravity
300
True or false?
Balanced forces move objects
False
300
How did Sir Isaac Newton come up with the laws of motion?
He saw an apple fall from a tree.
400
The main reason we need simple machines is to what?
a. Go faster
b. Make us happy
c. Make work easier
c. Make work easier
400
Newton's second law of motion states that the change in an object's motion depends on its _______ and the force acting upon it.
mass
400
When an unbalanced force acts upon an object, the object will move in which direction?
The direction the force is going.
400
Newton's third law of motion states that for every _________ there is an ________ and _______ __________
For every action there is an equal and opposite reaction
400
Does a baseball or a cotton ball have more mass?
Baseball
500
What is this object called? (Teacher will point to the object)
A fulcrum
500
When forces push or pull in different directions with the same amount of strength, the forces are said to be ____________.
Equal or balanced
500
What kind of force is this picture showing?
unbalanced
500
An object with a greater mass requires what?
A greater force to move it.
500
Which has less friction? Carpet or ice?
Ice