Force And Motion Question Preview (ID: 49980)
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Which of the following is the best example of DECREASED friction?
a) A parachute slowing a sky diver down
b) Oiling a squeaky door so the parts move against each other easily
c) Rubbing your hands together to keep them warm
d) Using gritty sandpaper to sand a rough board
A dump truck and a car are pushed with an equal force. Which of the following is true about the motion of the two vehicles?
a) The car will travel a longer distance because it has more mass
b) The dump truck will travel a longer distance because it has less mass
c) The car will travel a shorter distance because it has more inertia
d) the dump truck will travel a shorter distance because it has more mass
Mrs. Davila biked 40 miles in 2 hours. What was her average speed?
a) 30 miles per hour
b) 20 miles per hour
c) 7 miles per hour
d) 2 miles per hour
What must happen for a ball to be thrown in the air?
a) The force exerted on it must be greater than the force of gravity
b) The force exerted on it must be less than the force of gravity
c) The force of exerted on it must be equal to the force of gravity
d) The force of gravity must be stronger than the force exerted on the ball
Andy lives in the Southern Hemisphere and has summer when we in North Carolina are having winter. What is that?
a) because we are different distances from the sun
b) because we can't all have the same seasons all the time
c) because the Southern Hemisphere is tilted toward the sun while we are tilted away from the sun
d) because the Southern Hemisphere always has summer, never winter
Four balls, each with a different mass, are traveling at the same speed. Which ball would require the MOST force to stop its motion?
a) a ball with a mass of 2 kg
b) a ball with a mass of 8 kg
c) a ball with a mass of 16 kg
d) a ball with a mass of 24 kg
A force can....
a) make an object move
b) make an object stop moving
c) make an object change directions
d) all of the above
What is the relationship between evaporation and transpiration?
a) They both return water to the atmosphere
b) They both change water vapor into liquid water
c) They have nothing to do with one another
d) They both cause precipitation
What causes a bicycle to speed up when going down a hill?
a) air pressure
b) friction
c) gravity
d) mass
Zach is walking backwards through the hallway. Can his speed be calculated?
a) Yes, because friction is slowing him down
b) Yes, because we can measure how far he traveled in a certain time
c) No, we can only measure speed going forward
d) No, we can not measure negative distance traveled
A ball is kicked rolls along a level field until it comes to a stop. What is most responsible for the ball coming to a stop?
a) air
b) gravity
c) mass
d) friction
A baseball if thrown into the air. What is most responsible for it falling back to the ground?
a) air
b) gravity
c) mass
d) friction
An animal that eats plants and animals is a(n)
a) consumer
b) decomposer
c) producer
d) carnivore
A student measures how long it took her to run 100 meters. Which of the following can she calculate from the distance and time measurements?
a) force
b) speed
c) direction
d) mass
Which BEST explains why a car slows down when the brakes are applied?
a) The brakes heat up the rubber on the car's tires
b) The brakes add energy to the car
c) The brakes increase the force of gravity on the car
d) The brakes cause frictional forces on the tires of the car
A box is pushed in a straight line. How would an INCREASE in friction affect the motion of the box?
a) it would cause the box to be easier to push
b) it would cause the box's mass to change
c) it would cause the box to be harder to push
d) it would cause the box to change direction
What is friction?
a) it is force that will slow the movement of an object
b) it is a force that pulls things together
c) it is a force that pushes things apart
d) it is another definition for inertia
What is acceleration?
a) speeding up
b) slowing up
c) changing directions
d) speeding up, slowing down, or changing directions
An apple is sitting on a desk. Which is the most likely reason it does not move?
a) the forces are unbalanced
b) the forces are balanced
c) there are no forces
d) there is no gravity
Which of the following is NOT an example of radiation?
a) a person burning their hand on a hot stove
b) heat and light coming from a fire in the fireplace
c) microwaving popcorn
d) a light bulb glowing
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