# Module3 NTG

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```					                    Module 3 Note Taking Guide

Lesson 3.01: What is Force?
Lesson Page:

In science, a force is anything that can cause an object with __________________
to move.

Mass:

Mass is the amount of __________________ or stuff in an object. Don't confuse
mass with weight. They are related, but they are not the same.

Weight is how hard _______________ pulls on an object, where mass is the
amount of matter in an object. In the United States, we measure weight in
__________________. Mass is measured in _______________________.

Types of Forces:

Contact forces are applied when two or more objects ____________________
_____________.

Distance forces are applied when _____________ or more objects do not touch. A
_______________________ is a great example of a distance force. The magnet
and the metal piece don't have to touch to cause the metal to move.

Assignment Due: There is no assignment to turn in for this lesson
Lesson 3.02: Contact Forces
Lesson Page:

A contact force is any force where two or more objects _______________ touch.
There are _______ types of contact forces: Applied Force, _________________,
and Normal Force.

Applied Force:
An applied force is any force that is ______________ applied to an object by a
________________or other object.

The _______________ mass an object has the ________________ applied force it
will take to move the object.

Example: Pushing, throwing, and hitting will all cause objects to move.

Friction:
Friction is a ____________that is exerted by a surface on an object that is
___________________across it.

Friction will cause an object to _______________ down or make it hard to get the
object to _____________.

Aerodynamic: objects are shaped in such a way so they can move through
the air and _________________ air resistance.

Air _______________________ is a special type of friction.

Normal Force:
Normal force is a force that is released by ________________________ objects.

The normal force is a force that helps to ________________ objects. It keeps
objects from moving.

Assignment Due: Multiple Choice Quiz
Lesson 3.03: Distance Forces: Gravity
Lesson Page:
Distance forces cause objects that have mass to move _____________ physical
touch.      Example: Sky diving

Gravity:
Gravity is an __________________force.
Examples: we don’t fly out into space, “what goes up must come down”,
tripping and falling down ALL because of gravity.

Things that affect Gravity:
1. _________________: The more mass an object has the _______________
gravity it has.
2. _________________: The closer you are to an object the ______________
the pull of gravity.

Gravity Pulls the Same on All Objects:
__________________, a famous Italian scientist, determined that gravity will
apply the same force to ____________________ objects.

Two objects were dropped from the same height; the speed at which they would
fall would be the __________________.

On Earth, air ____________________ slows down objects.

When there is no air resistance (no ___________), objects will be affected the
same by gravity. SO, on Earth a feather falls _______________ than a hammer.
On the Moon, both objects fall _____________________________.

Air resistance is a type of ________________ between the air and a moving
object. The ________________ and shape of the object affect how much air
resistance will slow down the moving object.

Assignment Due: Create something that explains what gravity is and how air
resistance and mass affect gravity. Be sure to include an example of gravity!
Lesson 3.04: Distance Forces: Magnetism Lab

Lesson Page:

A _________________ is an object that can produce the magnetic force.

 All magnets have a _____________pole (N) and a ___________ pole (S).
You can see these represented by the letters S and N in the above magnet.

 The magnetic force in a magnet will attract objects that are made of
_______________, and it will have ______________effect on objects not
made of metal. This means the magnetic force only works on objects made
of metal.

 Two magnets will attract each other if the _______________ poles are put
toward each other.

 Two magnets will repel each other if the _______________ poles are put
toward each other.

Magnet Lab:
While you are doing the activity, pay close attention to:

 What kinds of substances magnets attract?

 When will two magnets attract each other?

 When will two magnets repel each other?

 How does distance affect magnets?

Assignment Due: Lab Worksheet to be completed during the lab.
Lesson 3.05: Distance Forces: Electrical Lab
Lesson Page:

The electrical force is a force that is created between objects that have a
_____________.
 Each object will have 1 of 3 charges:
o Positive
o Negative
o Neutral

When two objects with the same charge are in the same area, the objects will
______________. This is very similar to the way magnets repel each other.

When two objects with a different charge are in the same area, the objects will
___________________.

Electrical Forces Lab:

While you are doing the activity, pay close attention to:

   What type of interaction is there between objects with the same charge?

   What type of interaction is there between objects with a different charge?

   What type of interaction is there between a charged object and a neutral object?

   What type of interaction would there be between two neutral objects?

   What causes an atom to become positively or negatively charged?

Assignment Due: Lab Worksheet to be completed during the lab.
Lesson 3.06: Balanced and Unbalanced Forces

Lesson Page:

Balanced Forces:

When forces act on an object and do not change the speed of the object, this is
called a ________________________ force.

When the SAME amount of force is being applied to BOTH sides of an object, that
object won’t MOVE, change SPEED, or change DIRECTION.

Unbalanced Forces:

When forces act on an object that causes the speed or the ____________ of the
object to change, this is also called an ______________________ force.

Unbalanced forces don’t only cause objects to change their speed. They can also
cause an object to change its ______________________.

Anytime an object MOVES, changes SPEED or DIRECTION, then that object has an
unbalanced force acting on it.

Assignment Due: There is no assignment for this lesson.
Lesson 3.07 Note Taking Guide
Graphing a Constant Speed
Lesson Page:

Graphing Presentation

   What type of graph should we use to graph the SPEED of the car?
   What is the TITLE of your graph?
   What is data is graphed of your X-AXIS?
   What is data is graphed of your Y-AXIS?
   How do you plot your data points on the access?

Assignment Due: Turn in the race car work file located on the “Activity” page of
Lesson 3.07.

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