6 P 2

What change occurs when a liquid evaporates?

• The particles absorb heat and get closer together.

• The particles absorb heat and spread farther apart.

• The particles release heat and get closer together.

• The particles release heat and spread farther apart.

Tags

NGSS.MS-PS1-4

Why does the smell of food spread as its temperature is increased during cooking?

• The food becomes more solid.

• The food releases more gases.

• The food produces less energy.

• The food causes less convection.

Tags

NGSS.MS-PS1-4

A student tried to twist a metal lid off a glass jar without success. The student then placed the metal lid under hot running water and was able to remove the lid. Which best describes why the student was able to remove the lid?

• The molecules in the glass jar were heated and moved toward the lid.

• The molecules in the lid were heated and expanded away from the jar.

• The contents in the jar were heated and moved away from the top of the lid.

• The air surrounding the jar was heated and moved away from the sides of the jar.

Tags

NGSS.MS-PS1-4

The metal lid on a glass jar is hard to open, so it is held under warm, running water. What causes the jar to open easily after it was held under the water?

• The water increased the pressure under the lid.

• The jar shrunk with the warm water.

• The water acted as a lubricant between the glass and the metal.

• The metal lid expanded under warm water

Tags

NGSS.MS-PS1-4

Which letter represents amplitude? (a)  

• A

• B

• C

• D

• E

Tags

NGSS.MS-PS4-1

List the steps of the scientific method

d

e

f

c

b

a

Conduct experiment

Communicate results

Draw conclusions

Analyze results

Ask a question

Form a hypothesis

Sam found two pieces of pure silver on two different continents and melted them. Why did the two pieces of pure silver have the same melting point?

• Silver is a metal with high conductivity.

• The melting point of all metals is the same.

• Silver is composed of the same types of atoms.

• The melting point of all natural minerals is the same.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What happens to the movement of water particles when the water is cold compared to when it is hot.

• The particles in the cold water move more slowly.

• The particles in the cold water move more quickly.

• The particles in the cold water move more freely.

• The particles in the cold water do not move at all.

Tags

NGSS.MS-PS1-4

Graphite, diamond, and glassy carbon are all forms of the element carbon. Why are all three considered carbon?

• They were originally fossils.

• They are mined from the same region.

• They are composed of the same kind of atoms.

• They were formed from carbon-containing organisms.

Tags

NGSS.MS-PS1-1

Which best represents atoms moving closer together during a phase change?

• water in a lake gaining heat energy and evaporating

• ice on a mountaintop gaining heat energy and melting

• ice in the atmosphere losing heat energy and precipitating

• water vapor high in the atmosphere losing heat energy and freezing

Tags

NGSS.MS-PS1-4