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 keeps objects on Earth from floating into space?
A) clouds
B) gravity
C) sun
D) stars
B) gravity
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
Which of the following is force that works from a distance?
A) magnetism
B) push
C) pull
D) friction
A) magnetism
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
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 begin to move 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 begin to move to the right
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
Electricity is a form of _______.
A) energy
B) light
C) matter
D) sound
A) energy
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
A cannon fired a cannonball into the air. If there were no forces at all acting on the ball after it was fired, not even gravity, the ball would
A) fall down toward the ground.
B) turn to the left.
C) speed up.
D) not change speed or direction.
D) not change speed or direction.
Cindy is at the park. She throws a paper airplane toward the North. There is a strong wind blowing from the West to the East. What will most likely happen?
A) The airplane will keep going straight North.
B) The paper airplane will turn toward the South.
C) The paper airplane will turn toward the West.
D) The paper airplane will turn toward the East.
D) The paper airplane will turn toward the East.
Gus just made a paper airplane, and when he lets go of the airplane what force is acting on it?
A) friction and gravity
B) gravity and magnetism
C) friction and magnetism
D) none of the above
A) friction and gravity
Zach is riding in a car. The car is moving 40 miles per hour. Which is true?
A) Zach is not moving.
B) Zach is at rest with respect to the car.
C) The car is at rest with respect to the road.
D) Only the car is moving
B) Zach is at rest with respect to the car.
A year is the time it takes for
A) the Sun to make one complete spin on its axis.
B) Earth to make one complete circle around Sun.
C) Moon to make one complete circle around Earth.
D) Earth to make one complete spin on its axis.
B) Earth to make one complete circle around Sun.
Cassie has a magnet that she holds over an iron nail. The nail moves toward the magnet before the magnet touches it.
Which of the following is true about magnetism?
A) Magnetism is a force that must directly touch an object in order to move it.
B) Magnetism is a force that acts at a distance and cannot be seen
C) Magnetism is not a force, and therefore it cannot move an object.
D) Magnetism is a force that can be seen in the air as it moves an object.
B) Magnetism is a force that acts at a distance and cannot be seen
Which piece of lab equipment can be used to measure wind speed?
A) an anemometer
B) a prism
C) a plane mirror
D) a compass
A) an anemometer