Forces
Which force pulls things to the center of the Earth?
Gravity
Newton's most famous work is his discovery of how many laws of motion?
3
How many moving parts do simple machines have?
few or no moving parts
Legend says that Newton discovered Gravity when he was hit in the head by a falling what?
apple
Forces must be what to create motion?
unbalanced
Complete the sentence: A push is a force _____ _____ you, and a pull is a force ________ you.
A push is a force away from you, and a pull is a force towards you.
Which of Newton's discoveries says that heavier objects need more force to move than lighter objects?
Newton's 2nd Law of Motion
How do simple machines make work easier? (2 ways)
They change the direction of the force, or the amount of force needed.
How old was Newton when he discovered his famous laws of motion?
23
Which of Newton's Laws of Motion help rockets go to space?
Newton's 3rd Law of Motion
Air and water resistance are types of which force that is caused by things rubbing against each other?
friction
Finish the sentence to describe Newton's 1st Law of Motion, "Objects at rest will remain at rest, and objects..."
...in motion will remain in motion.
A lever is made of which two parts?
beam and fulcrum
What job did Newton's mother hope her son could get?
farmer
Which forces, if any, are acting on a ball at rest on the ground?
Gravity and Normal Force
When an object is resting on a table, which force is opposing gravity?
Normal Force
Newton's 3rd law tells us that every action has what?
an equal and opposite reaction
In a pulley system, how do you lower the amount of effort needed to lift a load?
add more wheels
Which university did Newton graduate from in 1665?
Cambridge
Does water resistance help a swimmer go faster, or make them go slower?
It does both.
What type of friction helps a runner be able to run?
static friction
Newton's laws of motion apply to what kinds of motion?
all kinds of motion
What does an inclined plane and a screw have in common?
They both can lower the amount of force needed to move things to a higher place.
No axle needed, Newton is also famous for creating which light-related discovery?
Newton's Color Wheel
What type of variables must remain the same in order to get good results in an experiment?
controlled variables