Unit 2 Weather And Climate Question Preview (ID: 53339)
Unit 2 Earth Science 7th Grade.
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About 70% of the surface of our planet is covered by water. Of all the water on Earth, the oceans make up about ______________ %.
a) 67%
b) 77%
c) 87%
d) 97%
Why can't we drink salt water from the ocean?
a) it will give you an upset stomach
b) it will give you diarrhea
c) it will cause dehydration
d) it will give you stomach cancer
Most photosynthetic activity happens in what layer of the ocean?sunlight
a) sunlight
b) twilight
c) midnight
d) abyassal
What do ocean currents move around the Earth that affects climate and weather around the globe?
a) water
b) fish and other animals
c) thermal energy
d) oxygen
A large volume of water flowing in a specific direction is called (n) _______________.
a) Gyre
b) Ocean Current
c) Water Cycle
d) Lake
The vertical movement of deep water toward the Earth's surface is called ____________.Upwelling
a) upwelling
b) surface currents
c) density currents
d) gyres
The vertical movement of surface water to deeper parts of the ocean is called _______________. up
a) upwelling
b) surface currents
c) density currents
d) gyres
____________ currents are caused by changes in temperature and salinity of water.
a) surface currents
b) density currents
c) global currents
d) upwelling currents
Which of the following is not a characteristic of the deeper layers of our ocean?
a) very little visible sunlight
b) extreme pressure
c) near freezing temperatures
d) 3/4 of the ocean floor exist here
The transformation of water vapor to liquid is called __________.
a) sublimation
b) evaporation
c) condensation
d) precipitation
Our global winds are affected by the rotation of the Earth on its axis. What is this called?
a) trade winds
b) coriolis effect
c) climate change
d) global warming
The passage of water from a plant to the atmosphere represents what process?
a) transportation
b) precipitation
c) transpiration
d) evaporation
What type of ocean currents are driven by global winds?
a) density currents
b) wind currents
c) surface currents
d) global currents
Density currents are caused by changes in the temperature and ____________ of water.
a) heat
b) salinity
c) oxygen
d) nutrients
What do ocean currents move around the earth that has a large effect on climate?
a) thermal energy
b) salt
c) plant and animal life
d) small islands
When 2 distinct air masses converge, they form boundaries called ___________.
a) maritime air masses
b) fronts
c) low-pressure systems
d) convergent boundaries
Weather maps can show lines that connect places with similar characteristics. Which lines represent areas of equal temperatures?
a) isobars
b) isotherms
c) doppler radar
d) infrared images
If you walk outside and there are no clouds, no rain, and just a pretty day, what type of pressure system is most likely covering the area where you are?
a) stationary front
b) occluded front
c) cold front
d) warm front
A ______________ front forms when a cold mass meets a warm but neither have enough force to move the other ass but neither h
a) low pressure system
b) high pressure system
c) cold front
d) warm front
Where do maritime air masses originate from?
a) over land
b) over water
c) over globe
d) over atmosphere
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