Weather Lesson

What are weather events?

• Things that occur when the seasons change.

• Patterns scientists use to predict the weather.

• Storms, floods, tornadoes, hurricanes, etc

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS3-2

What is convection?

• Heat/energy spreads out through space.

• Energy/heat is transferred from one object to another or within an object.

• Process in which warm, less dense air rises and cold, more dense air sinks.

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NGSS.MS-ESS2-6

NGSS.MS-PS1-4

How is the air heated?

• Air is only heated by the sun's energy being transferred to the air.

• The water at Earth's surface is warmer than the air. This energy from the water is absorbed by the air.

• The sun's energy is absorbed at Earth's surface. This energy is then conducted to the air.

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NGSS.MS-ESS2-6

Which is more dense, warm air mass or cold air mass?

• Warm air mass

• Cold air mass

• They both have the same density since they are air.

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NGSS.MS-ESS2-5

Why does cold water or cold air move under warm water or warm air?

• Cold substances are more dense than warm substances, so they sink.

• Cold water or air does not move under warm water or air; they mix together.

• Cold water or cold air moves faster than warm water or warm air, so it moves under the cold.

Tags

NGSS.MS-ESS2-6

NGSS.MS-PS1-4

Would a warm air mass or a cold air mass be more unstable, why?

• A cold air mass is more unstable because it has greater density causing it to sink under the warm air mass.

• A warm air mass is more unstable because it is lifted up by the cold air mass and its molecules have more energy.

• Both air masses are unstable because they are rising and sinking based on their density.

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

What is the boundary between two large air masses called?

• a front

• a lift

• a storm

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NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

Which has greater air pressure, a warm air mass or a cold air mass? How do you know?

• A cold air mass because it is unstable.

• A warm air mass because it rises up.

• A cold air mass because it has a great density and sinks.

Tags

NGSS.MS-ESS2-5

What is precipitation?

• when there is rain, snow sleet or hail

• when a gas changes to a liquid

• when a liquid changes to a gas

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS2-6

What is humidity?

• water vapor in the air

• pressure the air puts on the atmosphere

• rain, sleet, snow or hail

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS2-5