FORCE & MOTION 1
Mark throws a ball in the air, but the ball falls back down to the ground. What force causes the ball to fall back down to the ground?
A) Air pressure pushing on the ball
B) Mark's hand pushing the ball
C) Magnetism pulling the ball
D) Gravity pulling on the ball
D) Gravity pulling on the ball
Friction allows objects to ______.
A) start moving
B) stop moving
C) change direction
D) all of these
D) all of these
A soccer ball is rolling across the grass. It begins to slow down. Then it stops. What force caused the motion to stop?
A) gravity
B) pull
C) push
D) friction
D) friction
What force is used with a suitcase?
Pull
Which object below spins in a circular motion when used correctly?
A) toy train
B) toy top
C) playground swing
D) seesaw
B) toy top
What type of motion can moving objects have?
A) circular
B) back-and-forth
C) straight
D) all of these
D) all of these
Two tennis balls were both rolling. What will most likely happen if the two tennis balls collide with each other?
A) One ball will jump to avoid the other.
B) The balls will stop moving.
C) The balls will move in different directions.
D) The balls will continue in the same directions
C) The balls will move in different directions.
A force is a push or a pull. An object needs to be acted on by a force in order to do which of the following?
A) stop moving
B) keep moving
C) change direction
D) all of the above
D) all of the above
What force do you use with a wagon?
Pull
Rich balanced his pencil on the back of his chair. Which of the following is true?
A) The pencil must be magnetically attracted to the chair.
B) If no outside force is applied to the pencil or chair, then the pencil will fall down.
C) The pencil must fall off the chair eventually, due to gravity.
D) If the pencil falls off the chair, this means an outside force was applied
D) If the pencil falls off the chair, this means an outside force was applied
When two objects rub together, the force that opposes the motion of the objects is called ______.
A) electricity
B) gravity
C) friction
D) energy
C) friction
Andrew begins riding his bike. Which force is causing the bike to move forward?
A) push
B) gravity
C) friction
D) pull
A) push
What causes leaves to land on the ground?
A) evaporation
B) birds
C) gravity
D) magnetism
C) gravity
What force is used with a shopping cart?
Push
A soccer ball rolls towards Krista. She kicks the ball and changes the direction of motion. This is an example of which kind of force?
A) gravity
B) push
C) friction
D) pull
B) push
What keeps objects on Earth from floating into space?
A) clouds
B) gravity
C) sun
D) stars
B) gravity
Which means a change in position?
A) velocity
B) motion
C) speed
D) force
B) motion
Magnetism is an example of ______ because it is able to push and pull things.
A) gravity
B) matter
C) a force
D) a law
C) a force
Which force is used for closing a car door?
Which force is used for opening a car door?
Push
Pull
If Julia kicks a soccer ball to the right with a large force, what will happen to the ball?
A) The ball will not move at all.
B) The ball will move fast and to the right.
C) The ball will move in a zigzag pattern.
D) The ball will begin to move to the left.
B) The ball will move fast and to the right.