Which type of simple machine has a wheel and axle and is used to raise a flag?
What is a pulley
100
A man has 4 identical boxes that he wants to put on a lever. Where should the boxes be placed so that the lever will balance.
The boxes should be placed equal distance from the fulcrum on top of the beam.
100
Which one is NON an example of a lever
a - Scissors
b - chair
c - seesaw
d - plier
b - CHAIR
100
What form of energy is found in an apple
chemical
100
The force that moves against current motion
What is friction
200
Which type of simple machine includes a beam and fulcrum
What is a lever
200
small sally wants to lift TALL TINA where should small sally stand on the lever and where should tall tina stand on the lever so that she can complete this task
Small sally should stand as close to the edge as possible and TALL TINA should stand as close to the fulcrum as possible
200
which one is not an inclined plane
a - ladder
b - parking ramp
c - door wedge
d - bicycle
d - bicycle
200
what form of energy is used when ice melts in the hot sun
heat
200
The force that keeps our feet on the ground
What is gravity
300
This simple machine is a flat supporting surface tilted at an angle, with one end higher than the other, used as an aid for raising or lowering a load.
What is an inclined plane
300
Explain why it takes less effort for a man to move a heavy box up a ramp, then to pick it straight up into the air
The man can use less force by using the ramp
300
Which one is not an example of a pulley
a - flag pole
b - window shades
c - egg beater
c - egg beater
300
what form of energy is used to throw a baseball
mechanical energy
300
What is the point at which a lever pivots called
a fulcrum
400
This simple machine is a triangular shaped tool that is portable (moveable)
What is a wedge
400
Suppose there was sandpaper on the ramp, how might that sandpaper affect the man moving that heavy box up that ramp
friction would cause that man to have to use more force to move that heavy box up that ramp
400
Which one is NOT an example of a wheel and axle
a - bicycle wheel
b - rolling pin
c - ladder
c - ladder
400
What form of energy is produced when a guitar string vibrates
sound energy
400
exertion of effort that acts on an object to change that objects position is called
What is work or effort
500
Turning this object helps you move a metal object through a wooden space
What is a screw
500
Explain how a hammer is like a lever
the back of the hammer is used for prying nails from wood. If you put the load near the fulcrum and put force further away from the fulcrum you can make pulling a nail from a piece of wood easier
500
Name an example of a lever, a wheel and axle and a pulley