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Pulling a wagon uphill. Which situation is an example of increasing potential energy?
The ball A pitcher throws a baseball as shown in the diagram. Which of these has
MOSTLY kinetic energy?
By using electromagnetic waves and the process of radiation. How do microwaves cook
food?
Heating milk by conduction; popping popcorn by radiation. Bill and Mary wanted to have
a snack after school. They heated some milk in a pot on the stove to make hot chocolate. They
also popped some popcorn in the microwave oven. How did Bill and Mary transfer heat energy
to make these snacks?
Chemical Gasoline, wood, water behind a dam, and a boulder on the edge of a cliff all
represent some form of potential energy. What form of potential energy do gasoline and wood
have in common?
Heat energy. On a cold, winter day, Sheena rubs her hands together. Stored chemical
energy is transformed into mechanical energy. Due to the Law of Conservation of Energy some
of the energy is also transformed into...
, Electrical What form of energy is associated with the movement of charges, usually
electrons?
Sound Energy is produced when a force causes a substance to vibrate, and the energy is
transferred through the substance in wave.
Lever and wedge Shaina uses a shovel to dig a hole to plant a tree. A shovel is an example
of a compound machine because it is made up of what two simple machines?
Pulley What type of simple machine is used to pull a flag up to the top of a flagpole?
Carpet Sam was learning how to roller- skate. He did not want to go fast. On which kind
of floor surface would Sam travel the slowest?
The person using a ramp needs less force. Which best explains why a person using a ramp
can load heavy boxes onto a truck more easily than a person can using only human strength?
Acceleration Which term refers to the rate of change of motion?
A net force must be applied. What must happen to an object in order to accelerate it?
How much the car weighs. A car is traveling down a hill. Which of the following will
affect the amount of energy the car has?