Forms of Energy Category
Energy is the ability to do___
work
___is the energy of motion.
Kinetic energy
What kind of machine is made from very few parts?
A simple machine
A machine that is made up of two or more ___ is a called a compound machine
simple machines
What kind of energy do both food and gasoline use?
chemical energy
The kinetic energy of an object depends on what?
the mass and speed
What is a lever?
a machine made of a bar or rod that turns at a point.
true or false? a car is a compound machine that uses chemical energy.
True
gasoline provides the chemical energy
What two kinds of energy can you find at a fair?
heat and electrical energy
true or false? mechanical energy is a type of kinetic energy.
True
True or false? Levers make work easier so it saves energy
False! levers make work easier but it doesn't save energy.
How many simple machines make up a can opener? Bonus points if you can name what and where they are located on the can opener!
three simple machines
the handles are levers, the key is a wheel and axle, and the cutting blade is a type of inclined plane.
What kind of energy is stored in fireworks?
Chemical Energy
True or false? most kinetic energy is changed to potential energy.
False!
Most potential energy is changed is potential energy
What common household item is a wheel and axle machine?
a doorknob
Name the two simple machines that can be found in a bicycle, making it a compound machine.
wheel and axle (there are 4!)
lever
What forms of energy is the chemical energy changed into when the fireworks explode? Name at least 2 kinds of energy
heat, light, sound, or kinetic energy
What is friction? give an example of a simple machine that has friction.
Friction is a force that slows down or stops motion.
acceptable examples:
-a box has friction when being pushed up an inclined plane
-a pulley has some friction between the rope and wheel of the pulley
Name two places a wheel and axle machine can be found on a bicycle.
the wheels are connected to an axle
the pedals are connected to another axle
the gears and chain form a wheel and axle
the handlebars make up a wheel and axle