EPOM Density Creates Currents Daily Grade

Density moves matter in a process called ___________.

• currents

• convection

• poles

• motion

Cold air near the heater will warm up because

• the hot air becomes less dense, and rises.

• the hot air becomes more dense, and rises.

• the hot air becomes less dense, and sinks.

• the hot air becomes more dense, and sinks.

Tags

NGSS.MS-ESS2-6

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Convection currents happen in the atmosphere.

• True

• False

Tags

NGSS.MS-ESS2-6

NGSS.MS-ESS2-5

Air in atmosphere is ________ near the equator and __________ at the poles.

• cooled, heated

• heated, cooled

Tags

NGSS.MS-ESS2-6

Wind is very complex, but all wind is created by changes in _______ brought about by temperature differences.

• convection

• currents

• density

• temperature

Tags

NGSS.MS-ESS2-6

NGSS.MS-ESS2-5

Convection does not work in liquids or gases.

• True

• False

Tags

NGSS.MS-ESS2-6

NGSS.MS-ESS2-5

Ocean currents have several different causes, many of which are due to changes in _________.

• convection

• currents

• density

• temperature

Tags

NGSS.MS-ESS2-6

NGSS.MS-ESS2-4

Ice formation near the poles _________ the salt content of the surface water.

• increases

• decreases

The ______ salt in the water, the more dense it becomes.

• less

• more

The colder, denser, more saline water is the more it _______.

• sinks

• floats