NEW
Font size
WorksheetsHeat, Work, and Simple Machines
Total questions: 25
Worksheet time: 16mins
The bottom of a light bulb is a __________. You turn it clockwise into a light socket to screw it in, and counter-clockwise to unscrew it.
lever
screw
gear
wedge
A broom is a ____________. When using a broom, one hand acts as the fulcrum, and the other pushes the broom across the floor.
lever
screw
pulley
wedge
A ramp is a/an __________; it allows heavy object to be moved up or down using less effort over a greater distance.
lever
wheel-and-axle
gear
inclined plane
A/an __________ consists of a flat, slanted surface.
pulley
inclined plane
force
wheel-and-axle
Identify the simple machine
lever
pulley
wedge
inclined plane
Identify the simple machine
wheel-and-axle
pulley
wedge
screw
Examples of ___________ machines are a wheelbarrow, can opener, and bicycle.
new
compound
expensive
large
A doorknob is an example of a(n)__________
inclined plane
fixed pulley
wheel-and-axle
compound machine
The lid of a toilet seat is an example of a(n) _________
lever
pulley
wedge
screw
lever
pulley
wedge
screw
wedge
pulley
inclined plane
screw
lever
pulley
wedge
screw
lever
inclined plane
wedge
wheel-and-axle
We see evidence of energy when we see ___________ being done.
force
motion
work
energy
Each of the men in the illustration is pushing on the box. They each push for 30 seconds but do NOT move the box. The men applied ____________ but no ____________ was done.
force; work
work; force
motion; force
energy; force
In the diagram, which type of simple machine is being used to lift the load?
wheel and axle
inclined plane
lever
screw
Tweezers are an example of a(n) ___________
inclined plane
wedge
lever
screw
Scissors are made of what two simple machines?
wedge and screw
lever and pulley
wedge and lever
screw and pulley
Scissors are a compound machine.
True
False
A metal spoon is used to stir hot chocolate in a ceramic mug. Which statement describes the direction of heat transfer that occurs?
from the spoon to the mug
from the mug to the spoon
from the spoon to the hot chocolate
from the hot chocolate to the spoon
Which form of energy transfer is most responsible for the creation of Earth's air and ocean currents?
conduction
convection
radiation
insulation
Which statement is true about radiation?
Radiation is the transfer of energy between two objects in direct contact.
Radiation is the transfer of energy by movement of a heated substance.
Radiation is the transfer of energy through space without contact with the heat source.
Radiation is the transfer of energy from a lower temperature to a higher temperature.
Which cooking utensil would be the best conductor of heat energy when placed in boiling water?
metal whisk
plastic fork
rubber spatula
wooden spoon
What is an example of work being performed?
pushing against a stationary wall
holding a 100 pound bar bell
pushing a lawn mower 100 yards
marching in place
Which action would require NO WORK to be done on an object?
pushing an object across the floor of a room
lifting an object from the floor of a room
holding an object still above the floor of a room
dropping an object from a height above the floor of a room
