Magnet Science
Chapter 2 (Blue Book) Study Guide
Name_______________________________
Hour_____
Pages 36-41
1What is a force ?
2How is a force like velocity and acceleration?
3What is the unit for the strength of a force?
4How many Newtons does it take to lift a lemon?
5-
How are Newton’s represented?________________________ How do you know the direction and strength of a force?
6What is a net force ?
7What happens when 2 forces are in the same direction?
Opposite directions?
8What is happening if the “net force” is zero?
9What happens if there are unbalanced forces?
10What kind of forces do we have if an object is not in motion?
Pages 42-50
1What force causes a sled to go down hill? _____________________ Which force stops it?___________________
2What is friction ?

3What 2 factors determine the strength of friction?
4-
Are “smooth” surfaces really smooth? Explain.
5What would moving objects do without friction?
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6Name and describe the 4 types of friction
7What is gravity ?
8Where does gravity act?
9What factors affect gravity?
10What is mass ?
11What is weight ?
12Why would you weigh less on the moon?
13-
Why doesn’t a book fall when you are holding it up?
14What is free fall ?
15-
How much will something accelerate with gravity’s force?
16Why do leaves and acorns fall at different rates?
17What is terminal velocity ?

18Why do objects reach terminal velocity? (hint: the answer is in the paragraph before the highlighted words)
19If you shoot a bullet straight out of a gun and drop a bullet, which will hit the ground first?
Pages 51-54
1-
What is Newton’s first law?
2Using Newton’s first law, explain what changes a tennis ball’s direction when you hit it.
3The shortest way to state the first law is inertia. What is inertia ?
4What does inertia depend on?
5-
What is Newton’s second law?
6If acceleration is force/mass, what is force ? – re-work this equation to tell what force is: acceleration = force/mass
7What are the units of force?
8What is a Newton?
9What are 2 ways tat you can change the acceleration of a wagon?
Pages 55-61
1What is Newton’s third law?
2What is the short way to say this law?
3Give 2 examples of equal and opposite forces that are easy to see.
4Give an example of equal and opposite forces that is not easy to see.
5Why do we sometimes have motion and sometimes not when we have equal and opposite forces?

6What is momentum?
7Which has more momentum: a 2000 kg car hitting me at 1 m/s or a 200 kg bike hitting me at 8 m/s?
8Why do objects keep moving without forces?
Pages 64-67
1Why can a rocket launch?
2What is a satellite?
3Why are objects going in a circle always accelerating?
4What 2 things keep a satellite in orbit?
For the quiz, make sure you . . .
Can define: Force, Newton, Balanced Forces, Friction, Gravity, Mass, Weight, Terminal Velocity, Inertia,
Momentum, Centripetal Force, Force Diagram
Are able to describe the different kinds of friction
Know the factors affecting gravity
Can simplify Newton’s laws to easier language or concepts and give an example of the application of each.