6th grade · Science · Unit 7 of 9
Weather Systems
Air masses, fronts and the water cycle.
What your child practices
Practices how air masses and fronts change the weather, and how the sun and gravity drive the water cycle, including the rain shadow of the Cascades and atmospheric rivers.
Oregon State Standards learning standard: 6.ESS2.4; 6.ESS2.5 · the water cycle driven by sunlight and gravity, and how air masses cause weather changes
Sample questions
A taste of this unit. In the app, questions change every time and get easier or harder to match your child.
Question 1
A large body of air with similar temperature and humidity is an…
- front
- air mass
- cloud
- jet stream
air mass
Hint: Air masses can be huge.
Question 2
A cold front often brings…
- no change
- weeks of calm heat
- only fog
- storms then cooler weather
storms then cooler weather
Hint: Cold air pushes under warm air.
Question 3
High air pressure usually brings…
- heavy rain
- clear, calm weather
- storms
- hurricanes
clear, calm weather
Hint: Sinking air.
Question 4
Water soaking into the ground is…
- condensation
- transpiration
- evaporation
- infiltration
infiltration
Hint: It becomes groundwater.
Question 5
The boundary between two air masses is a…
- valley
- front
- ridge
- trough of a wave
front
Hint: Weather changes there.
Question 6
Dew forms on grass on a cool morning because…
- grass makes water
- it rained
- the sun melts it
- water vapor condenses on cool surfaces
water vapor condenses on cool surfaces
Hint: Cooling makes condensation.