1. Conor's science class has to choose an example of potential energy changing into kinetic energy. Which should they pick? *

• Sun warming up the Atlantic ocean

• pieces of metal stuck on a magnet

• a doll in a drawer

• a rollercoaster rolling down the ramp

Tags

NGSS.MS-PS3-2

1. As far back as about 1,000 years ago, people claimed that they had built a perpetual motion machine. They claimed the machine would run forever without having to do anything to it. Scientist know that a perpetual motion machine is impossible to build. The reason is that every machine constantly needs one thing to stay in motion. What does every machine need to stay in motion?

• electricity

• energy

• heat

• mass

Tags

NGSS.MS-PS3-5

Moving water has energy, just as air does. What can make electricity by converting the moving water.

• the ocean

• Dams

• Wind turbines

• The sun

Tags

NGSS.MS-PS3-5

The energy of running water can be converted into other forms of usable energy. What do we call the kind of energy produced by running water?

• Fossil fuels

• Hydroelectric

• Solar

• Wind

Tags

NGSS.MS-PS3-5

When do we use the Sun's energy without even knowing it?

• when a farmer uses sunlight to produce food

• when we got to the beach to get a tan

• when sunlight shines on oceans to start the water cycle

• when we use solar panels on hour houses to create electricity

Tags

NGSS.MS-ESS2-4

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Jorge shoots a basketball into a hoop. Jorge knows that the energy of the ball changes as it leaves his hand, goes to its highest point in the air, and then comes back down. Which claim best shows how the ball's energy changes?

• a. kinetic energy to potential energy

• a. potential energy to kinetic energy

• a. kinetic energy to potential energy to kinetic energy

• a. potential energy to kinetic energy to potential energy

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Carlos’s science class is studying how energy can move things. The teacher talks about sources of energy. Which of the following claims about energy is correct?

• energy is a limited resource

• moving water is a source of energy

• wind can replace all other energy resources

• energy can only come from space

What causes the Earth to change from day to night?

• Earth's revolution

• Mars rotation

• Earth's rotation

• Sun's revolution

Tags

NGSS.MS-ESS1-1

What is true about energy?

• objects at rest do not have energy

• most sources of energy are renewable

• energy can be destroyed when work is done

• energy can change from one form to another

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-2

NGSS.MS-PS3-5

What makes the sun, moon, and stars appear to move across the sky?

• Earth's rotation

• Sun's rotation

• Earth's revolution

• The moon's rotation

Tags

NGSS.MS-ESS2-6