Show:
Things That Move
Types of Motion
How Things Move
Forces and Motion in Sports
Forces and Motion in Nature
100
Matter you can see and touch.
Objects
100
How a turtle moves.
Slowly
100
Objects move when something ____ or ____ the objects.
pushes...pulls (or pulls...pushes)
100
Which force helps a skier move down a mountain?
Gravity
100
A cheetah moves very ...
fast.
200
How fast an object moves.
Speed
200
Direction is...
the way an object moves.
200
What force makes objects fall to the Earth?
Gravity
200
A strong _____ moves a hockey puck.
push
200
How long does it take for the Earth to move around the sun?
It takes one year for the Earth to move around the sun.
300
Objects that move around the sun are called...
Planets
300
Stronger forces cause ...
faster motion
300
_____ cause motion.
Forces
300
What happens when a soccer ball rubs on the grass?
It stops.
300
There is _____ gravity in space. a) more b) less
b) less
400
A glacier moves very...
Slowly
400
Objects in motion cause ...
more motion.
400
_____ stops motion.
Friction
400
Smooth surfaces make an object move: a) faster b) slower
a) faster
400
When a bird flies, the bird pushes the air down with its wings, and the air pushes the bird up. Which law of motion is this?
The third law of motion: The force of an action equals the force of a reaction.
500
The first law of motion says...
Objects at rest stay at rest. Objects in motion stay in motion.
500
When a swimmer swims, the swimmer pushes the water backward, and the water pushes the swimmer...
forward
500
We need to wear seat belts because of ...
inertia.
500
Why do the fastest bicyclists need less force to move their bicycles?
The bicycles do not weigh very much and / or the bicycles have very thin tires.
500
Why do people put fences near mountain roads?
People put fences near mountain roads to stop the motion of rock slides so they don't hit cars or people.