SC 4 P 10 2

An atom's atomic weight measures the total of the mass of the protons, neutrons, and electrons.

• True

• False

Protons are small, positively-charged atomic particles

• True

• False

Kyle wanted to see which gum had the most sugar. He chose four different brands of gum. He weighed each piece. Then he chewed each piece for 10 minutes. After that, he let the gum dry and weighed it again. He recorded his data in the table below. What is the independent variable in Kyle's experiment?

• the weight of the final dried gum

• the time chewed

• the change in weight of the gum

• the brand of gum

The period table of the elements is a tool used by scientists.

• true

• false

The __________ and _________ make up the majority of an atoms atomic mass.

• protons and electrons

• electrons and neutrons

• protons and neutrons

Damian was studying mechanical energy in science class. He noticed several possible examples of mechanical energy in his environment. Which of the following is an example of mechanical energy?

• A lamp that is not plugged in.

• An unused battery.

• A windmill with no wind.

• A garden hose with moving water.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

The smooth, shiny surface of the water shows a hot air balloon. What causes the image of the hot air balloon to appear on the surface of the water?

• The refraction of light.

• The reflection of light.

• The absorption of light.

• The splitting of light.

Tags

NGSS.MS-PS4-2

Jason stretches a rubber band between his fingers as shown. When he plucks the rubber band, it makes a sound. Which of the following BEST explains why the rubber band makes a sound when Jason plucks it?

• It heats the air.

• It vibrates the air.

• It absorbs energy from the air.

• It releases molecules into the air.

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Joe touched the metal spoon that was sitting in a hot pot on the stove. He felt like he burned his hand. Why did this happen?

• The spoon was hot because heat transferred from the soup to the spoon.

• The spoon was hot because heat transferred from the soup to the pan.

• The spoon was hot because the temperature of the soup did not change.

• The spoon did not get hot, he burned his hand on the stove.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Which cup is the best insulator?

• The paper cup

• The glass cup

• The foam cup

• They were all the same

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4