Vocab #1
Vocab #2
Lesson 1
Lesson 2
Lesson 3
100
What is force?
Any push or pull
100
Stored energy is..
POTENTIAL ENERGY
100
True/False- A roller coaster on a curved path accelerates even if its speed does not change.
True
100
An object moves in the (same/opposite) direction as the force?
Same
100
What is weight?
A measure of the force of gravity acting on an object's mass
200
Kinetic Energy is...
the energy of motion
200
A force that acts when two surfaces rub together is...
FRICTION
200
What are some words the describe direction? List 8
1. north 2. south 3. east 4. west 5. up 6. down 7. left 8. right
200
True/False- ALL objects act only on contact.
False
200
The force of gravity is stronger when objects are _________ together.
Closer
300
What is work?
the ability to move something
300
A force that makes objects pull toward each other is...
GRAVITY
300
What does speed measure?
How fast an object moves.
300
What are combining forces?
When both sides are pulling or pushing
300
What unit do you use to measure force?
Newton
400
What is speed?
The rate at which an object changes position
400
The change in one object's position compared to another object's fixed position is...
relative motion
400
What is a change in the speed or direction of an object's motion?
acceleration
400
You need more/less force for an object with more mass.
MORE
400
Objects that are stretched or squeezed have what kind of energy?
Potential
500
what is velocity?
both the speed and direction of a moving object
500
The objects you use to detect motion is...
frame of reference
500
how can you find an object's speed?
divide the distance the object moves by the total time spent moving
500
The amount of friction between 2 surfaces depends on...
each object's surface and its mass
500
Can energy be made or destroyed?
NO
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