Why is the force of gravity so evident between Earth and objects on Earth?

because the mass of the Earth is so large

a change in the position of an object

a pull that attracts objects to one another

What is a contact force?

a force that requires two pieces of matter to touch

If a machine isn't oiled properly, what may happen to parts of the machine as it works?

the amount of friction increases and the machine overheats

the rate at which an object changes position

opposes motion between two surfaces that are touching

What are balanced forces?

forces that are equal in strength, but opposite in direction

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Forces and Motion

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Questions 25

Answers

1
When opposite poles of a magnet are near one another, how do they react?
they dance
they repel
they go their separate ways
they attract
2
What is magnetism?
a force that acts at a distance and cannot be seen
the force that opposes motion between two surfaces
Electromagnent
the speed of an object
3
What is mass?
forces that are equal in strength, but opposite in direction
force that opposes motion between two surfaces that touch
a push or a pull
the amount of matter that makes up an object
4
Which surface would have the least friction?
wood
sand
carpet
glass
5
A cheetah's _____ is much faster than a hippos's.
friction
mass
balanced force
rate of motion
6
What is a force?
a pull that attracts objects to one another
pull only
a push or a pull
push only
7
Why is the force of gravity so evident between Earth and objects on Earth?
because the mass of the Earth is so large
the moon is so small
the moon is so large
because the mass of the Earth is so small
8
What is motion?
a change in the position of an object
a force that acts at a distance and cannot be seen
a pull that attracts objects to one another
a push or a pull
9
When like poles of a magnet are near one another, how do they react?
they run
they repel
the attract
they dance
10
What is gravity?
a pull that attracts objects to one another
forces that are equal in strength, but opposite in direction
the speed of an object ( how fast it is moving)
the amount of matter that makes up an object
11
A water bottle sitting on desk is an example of a ________.
magnetism
unbalanced force
rate of motion
balanced force
12
What is an example of a non-contact force
speed
gravity
friction
mass
13
What is a contact force?
a force that acts at a distance
a force that requires two pieces of matter to touch
a force that does not require two pieces of matter to touch
a push or pull that acts on an object
14
If a machine isn't oiled properly, what may happen to parts of the machine as it works?
the machine works smoothly and friction doesn't increase
the amount of friction increases and the machine overheats
15
How many laws of motion does Newton have?
3
2
1
4
16
How does Earth's gravity effect objects on Earth?
it keeps them heavy
it keeps them on the ground
it keeps them round
the objects float into space
17
Which surface has more friction?
Smooth
Rough
18
T or F? Moving an apple does not take as much forces as moving a your t.v.
true
false
19
What is speed?
not all objects travel at a steady speed
place or object used to determine if an object is in motion
the rate at which an object changes position
a measure of the speed and direction of an object
20
T or F? Friction depends on the surface of the object and the amount of force pushing.
true
false
21
What is friction?
the speed of an object (how fast it is moving)
opposes motion between two surfaces that are touching
a push or a pull
the amount of matter that makes up an object
22
Which is easier to stop?
falling star
ball flying through the air
falling tree
23
Which falls to the ground faster?
newspaper
fork
24
What are balanced forces?
a force that acts at a distance and cannot be seen
a pull that attracts objects to one another
forces that are equal in strength, but opposite in direction
the amount of matter that makes up an object
25
Known as "The Father of Physics".
Mr. Scott
Miss Frizzle
Sir Issac Newton
Albert Einstein

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