Jack has a rock. The rock has a mass of 14g and a volume of 2cm³. What is the density of the rock?

• 7 mL

• 7 g/cm³

• 28 g/cm³

A brick sinks in water while a wooden block of the same size floats. This is because the brick has a

• lower volume than the wooden block

• lower density than the wooden block

• higher volume than the wooden block

• higher density than the wooden block

Helium balloons rise on earth because

• helium is more dense than air

• helium is less dense than air

• helium is cooler than air

What is the definition of CONDUCTION?

• When heat is transferred from objects like rays of light or electromagnetically.

• a hot liquid or air that expands, becomes less dense, and rises or becomes more dense, and sinks.

• When heat transfers from objects that are touching.

Warm air rises and the cool air sinks demonstrates this type of heat transfer.

• conduction

• convection

• radiation

Which liquid is the least dense?

• oil
• syrup

Which box has a higher density?  

• Box A
• Box B
• cannot be determined

Will an object with a density of 0.75 g/cm³ sink or float in water?

• sink
• float

As heat rises, _________

• molecules gain energy, expand and rise, becoming less dense
• molecules loose energy, condense and sink, becoming more dense

Tags

NGSS.MS-PS1-4

As heat is taken away from molecules, ________

• molecules gain energy, expand and rise, becoming less dense

• molecules loose energy, condense and sink, becoming more dense

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4