Midterm 1

1. 1. Which of the following statements about the oceans is False?

• A. more than 97% of the earth's water is contained in the oceans

• B. earth's oceans are 4 million years old

• C. the average ocean depth is much greater than the average land surface elevation

• D. earths oceans came from some mixture of volcanic outgassing and water delivered on comets

true/false. the deepest parts if the oceans always occur at the center of ocean basins.

• A. false

• B. true

what are the three types of atmospheric circulation cells?

• A. the atmosphere does not circulate

• B. cumulus, cirrus, stratus

• C. western boundary, Gulf Stream, gyre

• D. Hadley, ferrel, polar

earths seasons are caused by....

• the deaths tilt relative to the plane of its orbit around the sun

• the distance of earth from the sun

6. 6. Assuming the speed of sound in the ocean is 1500 m/s, and standing on a ship you measure a two-way travel time of 2 seconds, what is the depth of the ocean below you?

• 500 m

• 750 m

• 1500 m

• 3000 m

• 6000 m

the greenhouse effect, which is caused by atmosphere, keeps the earths surface....

• the same temperature as its effective temperature

• colder than its effective temperature

• warmer than its effective temperature

which of the following lists describes the correct order of occurrence form oldest to most recent?

• big name, solar system formation, evolution of life, on earth, oceans on earth

• protostar formation, Big Bang, oceans on earth

• planetary accretion, ocean on earth, evolution of life on earth

• solar system formation, Big Bang, oceans on earth

the first element likely to have formed following the Big Bang was:

• helium

• hydrogen

• carbon

• nitrogen

• oxygen

earth has a higher pressure atmosphere compared to mars because:

• earth had more CO2 outgassed from it interior than Mars

• mars doesn't have photosynthesizing organisms removing CO2 from the atmosphere

• All of the Co2 on Mars is frozen at the poles

• mars has much less mass than earth and so retains a thinner atmosphere

• mars never had any liquid water present in its surface

earths upper mantle is solid

• true

• false