Yueng Lenn Practice questions

?
What is the aspect ratio of an ocean that is 5,000km wide and 1,000km deep?
5000 : 1
1 of 10
What is the pressure in the ocean (in atmospheres) at a depth of 200 metres?
21 atm
2 of 10
What is the volume of an iceberg weighing 2 tonnes (2000kg) and with a density of 920 kg/m3 ?
2.17m3
3 of 10
What volume of the iceberg will therefore be visible above the ocean surface?
0.17m3
4 of 10
8) Densest water is found at the bottom of the ocean. If cold water lies on top of warm it will sink – a process called convection. The atmosphere actually gets colder as you go up, so cold air lies on top of warm. Why doesn’t the cold air sink?
As you go up, the air becomes less dense because the pressure decreases. This counteracts the effect of the cooling
5 of 10
In waves in deep water, the water particles beneath the waves travel in circles as the wave goes past. For a particle at the surface, at what speed will it move round the circle if the wave height is 2 metres and the wave period is 10 seconds?
63 centimetres per second
6 of 10
In deep water, waves with long period go faster. What name do we give to this effect?
dispersion
7 of 10
Waves in shallow water travel at a speed which just depends on what?
The water depth
8 of 10
Why is there an inflow of surface water through the Strait of Gibraltar to the Mediterranean Sea?
It replaces water lost from the Med by evaporation
9 of 10
In the Strait of Gibraltar there is also a deep flow of water out of the Mediterranean into the Atlantic. If the surface inflow is 4 Sverdrups and salinity 30, and the bottom outflow is 3 Sverdrups, what must be its salinity to maintain a salt balanc
40
10 of 10

Other cards in this set

Card 2

Front

What is the pressure in the ocean (in atmospheres) at a depth of 200 metres?

Back

21 atm

Card 3

Front

What is the volume of an iceberg weighing 2 tonnes (2000kg) and with a density of 920 kg/m3 ?

Back

Preview of the front of card 3

Card 4

Front

What volume of the iceberg will therefore be visible above the ocean surface?

Back

Preview of the front of card 4

Card 5

Front

8) Densest water is found at the bottom of the ocean. If cold water lies on top of warm it will sink – a process called convection. The atmosphere actually gets colder as you go up, so cold air lies on top of warm. Why doesn’t the cold air sink?

Back

Preview of the front of card 5
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