WorksheetsMySci Unit 20 Section 3-4 Post Test Review
Total questions: 20
Worksheet time: 49mins
What 2 variables affect the amount of work done on an object?
Force and Speed
Speed and Mass
Distance and Time
Force and Distance
A student is trying to move a large tree that is stuck in the ground. Which method would use the least amount of effort?
Using a pulley to pull the tree out of the ground.
Using a lever to pull the tree out of the ground.
Using your hands to pull the tree out of the ground.
Using a wedge to pull the tree out of the ground.
How would a lever make the work easier for the student who is trying to get the tree out of the ground?
Less force would be needed when using the lever to pull the tree out of the ground.
More force was needed when using a lever to pull the tree out of the ground.
A science class wanted to know if an empty wagon and a wagon full of marbles would roll down a ramp at the same speed. How would they create a fair test?
You would need one steep ramp and one slightly steep ramp to perform a fair test.
You would need 1 large wagon and 1 small wagon and 2 ramps that are the same height and width to perform the fair test.
The ramps would need to be the same height and width to perform a fair test.
Cayden and Josiah are building a garden near the playground at Wyland. There are 10 heavy rocks at the location where they want to build the garden. Before they begin building the garden, they have to move the rocks. What simple machines should they use to solve their problem? (There is more than 1 answer)
Lever
Wheel and Axle
Screw
Ramp
Wedge
How could a lever help Josiah and Cayden remove the rocks from the area where they want to build a garden?
A lever makes objects move.
A lever makes it easier to lift objects.
A lever can be used to place 2 pieces of wood together.
How could a wheel and axle help Josiah and Cayden remove the rocks from the area where they want to build a garden?
A wheel and axle make it easier to lift things.
A wheel and axle can be used to place 2 pieces of wood together.
A wheel and axle make objects move.
A wheel and axle make it easier to move from a lower level to a higher level.
How could a ramp help Josiah and Cayden remove the rocks from the area where they want to build a garden?
A ramp makes it easier to move objects from a lower level to a higher level.
A ramp makes it easier to lift objects.
A ramp can be used to place 2 pieces of wood together.
Skylar sees a switch as she walks into the classroom. She pushes down on the switch and at the other end of the switch is a pinata filled with candy. The pinata moves up into the air. What simple machine did she use to lift the pinata into the air?
Pulley
Screw
Ramp
Lever
If Skylar pulls the switch back up, what will happen to the pinata?
The pinata will go higher in the air.
The pinata will fly across the room.
The pinata will move down again.
How much force do you think Skylar had to put into pushing the lever down to make the pinata at the other end go up?
Skylar used a small amount of force to raise the pinata up to the ceiling because she used a lever to help her.
Skylar used no force to raise the pinata up.
If Skylar had used her hands to raise the pinata to the ceiling, she would need to use less force than if she used a lever.
Describe the energy transfer that occurred when Skylar pushed on the switch and it raised a pinata up to the ceiling.
Energy from Skylar's hand pushed down on the lever, which caused the other side of the lever to go down, dropping the pinata to the floor.
Energy from Skylar's hand pushed down on the lever, which caused the other side of the lever to go up, raising the pinata towards the ceiling.
The energy in the handle caused the other side of the lever to go up, raising the pinata to the ceiling.
A person is trying to get up a ramp in a wheelchair. Which ramp would need the most amount of force to get up the ramp.
What simple machine is this?
wheel and axle
pulley
wedge
lever
Which simple machine is this?
lever
pulley
screw
wheel and axle
What simple machine is this?
lever
wheel and axle
wedge
inclined plane
What simple machine is this?
lever
inclined plane
wedge
pulley
Which simple machine is this?
wedge
inclined plane
screw
pulley
Which simple machine is this? (look at the bottom of the lightbulb)
wedge
inclined plane
screw
lever
When you are sliding an object across the room, friction causes you to use more force to move the object.
True
False
