What two factors affect the amount of kinetic energy an object has? Check all that apply.

• mass

• volume

• density

• speed

Tags

NGSS.MS-PS3-1

Why do slow moving trains have much more kinetic energy than fast moving cars?

• The speed of the train is greater.

• The mass of the train is greater.

• The density of the train is greater.

• The volume of the train is greater.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Most meteorites are very small, yet they can leave a very large crater on the surface of the Moon. Why does this happen?

• The meteorite is made of iron.

• The meteorite is made of very hard rock.

• The meteorite get larger as it gets closer to the surface.

• The meteorite gains a lot of speed as it travels to the surface.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS3-1

NGSS.MS-PS3-5

What is a dependent variable?

• The variable you are testing.

• The variable you are measuring.

• The variable you are controlling.

• The variable you are keeping the same.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

What is a independent variable?

• The variable you are testing.

• The variable you are measuring.

• The variable you are controlling.

• The variable you are keeping the same.

Tags

NGSS.MS-PS2-2

This is a picture of a

• rolling can.

• spinning top.

• Rube Goldberg machine.

• pendulum.

This is a complicated device used to solve simple problem or perform a simple task. What is it called?

• pendulum

• Rube Goldberg machine

• rolling can

• spinning top

Tags

NGSS.MS-ETS1-2

You perform an experiment to see if the amount of water affects plant growth. What is the dependent variable in your experiment?

• type of plant used

• the amount of water

• the amount of ight

• the height of the plant

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

You perform an experiment to see if the amount of water affects plant growth. What is the independent variable in your experiment?

• type of plant used

• the amount of water

• the amount of ight

• the height of the plant

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Someone invented this device that they claim will run forever and never stop. This device would be called a

• spinning top.

• perpetual motion machine.

• Rube Goldberg machine.

• pendulum.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2