What do the following types of energy have in common: coal, solar, and natural gas?

• They are all renewable sources of energy

• They are all nonrenewable sources of energy

• They all originate from the sun

• They all are limitless in their ability to be reproduced

Which of the following are examples of kinetic energy?

• A ball rolling, a swing swinging, a kite flying

• A rock on the ground

• A slingshot pulled all the way back

• A rollercoaster at the top of the hill before it goes down

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NGSS.MS-PS3-1

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To complete a project 200,000 Joules of work are needed. The time taken to coplete the project is 20 seconds. What number goes with w?

• w=20 seconds

• w=10 Watts

• w=200,000 Joules

• w=10,000 Joules

To complete a project 200,000 Joules of work are needed. The time taken to complete the project is 20 seconds. How much power is needed? P=w/t

• P=200,000 J/20s

• P=20s/200,000 J

• P=200,000 Jx20s

• P=3

What tool would you use to measure force in a science lab?

• Triple beam balance

• Spring scale

• Meter stick

• Graduated cylinder

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What unit is used to measure mass?

• Grams

• Milliliters

• Newtons

• Pounds

Which of the following would NOT change if measured on the moon?

• Your weight

• Your force due to gravity

• Your mass

• Your pounds on a scale

Which of the following best describes how a hydroelectric dam works?

• Water is heated up and the boiling water produces electricity.

• Water falls, causing a turbine of permanent magnets to spin around an electromagnet generating electricity.

• Water evaporates into clouds and the static electricity between the clouds is captured.

• Water flows through a tube at a constant rate producing electrical charges.

Which of the following statements best describes how generators work?

• Converting electrical energy into mechanical energy

• Converting chemical energy into radiant energy

• Converting electrical energy into radiant energy

• Converting mechanical energy into electrical energy

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If two atoms have identical physical/chemical properties, they are most likely:

• Atoms of the same element

• Two different elements

• Chemically combined

• Ions