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WorksheetsEnergy Transformation/ Simple Machines
Total questions: 25
Worksheet time: 8mins
Which energy conversion is taking place when you put gasoline in a car?
chemical -> mechanical
mechanical -> electromagnetic
Electrical Energy is transferred to _____ Energy.
Thermal
chemical
Which energy transformation occurs in a toaster?
electric to thermal
chemical to electric
A battery converts what type of energy to another?
light to heat
chemical to electrical
Energy transformations occur when...
a chemical reaction takes place
energy changes from one form to another
Which items would have this energy transformation: chemical energy -> mechanical energy?
person running
windmill turning
A hairdryer converts --
electrical energy into thermal
chemical energy into mechanical
A complete circuit with a battery and a buzzer making noise. This circuit works by transforming___
chemical energy to electrical to sound.
sound energy to electrical to chemical.
What machine changes electrical energy into light and sound energy?
alarm clock
lightbulb
An example of electrical energy to heat energy.
using a hotplate to boil water
mixing chemicals to produce heat
Which of the following converts chemical energy to sound and radiant energy?
Solar calculator
Firecracker
What would be the energy transformation from Position A to Position B?
Gravitational Potential to Kinetic
Potential Elastic to Gravitational Potential
Which energy flow diagram best describes the energy transformations in the illustration?
(Hydroelectric Power Plant)
Mechanical --> electric
thermal energy into mechanical
When you rub your hands together, the friction takes _________ energy and transforms it into _____________ energy.
mechanical, thermal
gravitational, sound
Burning turns wood into ash and smoke
chemical energy, thermal energy, radiant energy
radiant energy, mechanical energy, gravitational potential energy
A simple machine is a device that helps to reduce the amount of force required to work.
force
energy
Which of the following does a simple machine do?
reduce the amount of force needed to do work
reduce the amount of work needed to do work
Which of the following is NOT an example of a compound machine?
pulley
scissors
A _______ pulley is used to reduce the amount of effort force.
single
movable
How can an inclined plane reduces the amount of force required to lift an object?
decrease the length of the ramp
increase the length of the ramp
A pair of scissors is a compound simple machine that uses levers to force wedges onto something to cut it.
levers to force wedges onto something to cut it.
Inclined plane to force wedges onto something to cut it.
While using a pulley system to lift heavy objects, it may magnify or reduce the forces that can be applied to it, but it does not change the total amount of work needed to perform the overall task.
True
False
A machine is used to lift heavy objects in a construction site. It uses a combination of pulleys and levers to make the lifting easier. Is this statement true or false?
True
False
In a seesaw, the effort is in the middle between the fulcrum and the load.
True
False
The broom is lever. You pivot the handle of the broom at the top (fulcrum) and push the handle near the middle (effort), so the bristles at the other end will sweep across the floor.
True
False
