Summative 2

Among the four factors that affects the formation of the breezes, monsoons and ITCZ, which is best described by the number of molecules per some volume of space?

• Air temperature

• Altitude

• Atmospheric pressure

• Density

Low pressure is associated with warm air while high pressure is associated with cold air. What is the logic behind this?

• Cold air rises because it is less dense due to the spreading of the molecules caused by the warm temperature.

• Cold air sinks because it is denser due to the grouping of the molecules caused by the high temperature.

• Warm air rises because it is less dense due to the spreading of the molecules caused by the warm temperature.

• Warm air sinks because it is denser due to the grouping of the molecules caused by the high temperature.

The Southwest monsoon brings warm, moist air to the landmasses with low pressure. Where does the warm, moist air come from?

• China

• Indian ocean

• Mongolia

• Siberia

For wind to form, there’s a need for difference in air pressure. What is required for pressure difference to take place?

• Difference in temperature

• Higher pressure gradient

• Lower altitude

• Wind speed

The movement of wind is from high pressure to low pressure. This means that cold air goes towards the warm air. How is this related to sea breeze?

• The warm air in the land rises and is replaced by the cold air coming from the sea.

• The warm air in the sea rises and is replaced by the cold air coming from the land.

• The cold air in the land rises and is replaced by the warm air coming from the sea.

• The cold air in the sea rises and is replaced by the warm air coming from the land.

Trade winds are warming, drying winds that can hold enormous amounts of moisture. In what region does this major wind system occurs?

• Equator

• Polar

• Temperate

• Tropics

Heat transfer differs in different states of matter. What mode of heat transfer occurs in the formation of breezes?

• Conduction

• Convection

• Conviction

• Radiation

As the electromagnetic radiation enters the atmosphere, some of it is reflected and some are absorbed. Which of the following radiation reaches the ground?

• Gamma ray

• Radio wave

• Visible light

• X-ray

Ionosphere is where auroras can be found. Auroras are the colored lights that may appear in colors green, yellow, red and purple. What causes the formation of auroras?

• Occur within 50 km-80 km above the ground

• Presence of ions

• Temperature in the polar regions

• When the solar wind strikes gases in the atmosphere

Among the five layers of the atmosphere, mesosphere is the coldest. Why is mesosphere colder than thermosphere?

• The closer you are to the sun, the higher is the temperature.

• The closer you are to the earth, the higher is the temperature.

• The stratosphere is protected by the ozone layer which blocks the UV radiation.

• The stratosphere is protected by the ozone layer which absorbs the UV radiation.