Eureka # 21• What are asteroids made of?

• What are comets made of?

Answer:

• AsteroidsAsteroids are made of rock and/or metal.

• CometsComets are made of ice, small rocks, dust, and gas.

Eureka # 22

What causes weather?

Answer:• The Sun causes an uneven

heating of the Earth’s surface

• Cycling of water in and out of the atmosphere

• Air masses, ocean currents

Eureka # 23

• Where are tropical zones located? Draw and label their locations.

• What type of weather occurs in these locations?

Answer:

• Nearest the equator

• The temperature is high because tropical zones receive direct sun rays all year

Tropic of Cancer

Tropic of Capricorn

Equator

Tropical Zone

Eureka # 24• Where are the temperate and

polar zones? Draw and label their locations.

• What type of weather occurs in each of these locations?

Answer:• Polar Zones

– located nearest the north and south poles

– temperature is continuously cold b/c these poles are tilted away from the Sun

• Temperate Zones

– located between tropical and polar zones

– distinct changing seasons

Tropic of Cancer

Tropic of Capricorn

Equator

Tropical Zone Temperate Zones

Polar Zone

Polar Zone

Eureka #25Using the words

EVAPORATION, CONDENSATION, PRECIPITATION,

INFILTRATION, and RUNOFF

draw and describe the water cycle.

Water Cycle1. Evaporation – liquid water from bodies of water and plants

(transpiration) changes into water vapor and becomes part of the atmosphere

2. Condensation – water vapor begins to cool and liquid droplets collect on dust particles high in the atmosphere, making clouds

3. Precipitation – once the clouds become heavy enough, solid or liquid water may fall from the sky as rain, sleet, snow, freezing rain, or hail

4. Infiltration – all water that soaks into the ground after precipitation; this could be used by plants or go to a body of water

5. Run-off – all water that is not soaked into the ground after precipitation eventually flows over land into bodies of water such as rivers, lakes, etc.

The Water Cycle

Eureka #26

How can warm and cold fronts be identified on

a weather map?

A boundary between two air masses is

called a front.

Moving fronts indicate a change in weather.

COLD FRONT - blue sharp “teeth” pointing in the direction of the moving cold air.

WARM FRONT - red rounded “teeth” pointing in the direction of the moving warm air.

Eureka #27What type of weather is

associated with low pressure?

What type of weather is associated with high pressure?

High pressure - fair weather

Low pressure -

stormy weather

Eureka #28In what direction do weather

fronts generally move across the United States?

Highs and lows tend to travel from

west to east across the United States,

bringing changing weather as they move.

Eureka #29

• What is energy?

• List 6 examples of energy.

Answer:• Energy is the ability to do work. Forms include:–light –thermal–chemical –nuclear –electrical –mechanical (i.e., sound)

Eureka #30

• Give an example of one type of energy changing to another.

Answer:

• Light to chemical in a plant (photosynthesis)

• Electrical to light when you turn on a light switch

• Chemical to heat whenyou digest food