Environmental Science MCQs

Question 1

What are rodenticides?

Accepted Answer

That kill rats

Answer

That kill fishes

Answer

That kill insects

Answer

That kill crocos

Question 2

When the air is saturated, which of the following statements is not correct?

Accepted Answer

An increase in temperature will cause condensation to occur

Answer

The air temperature equals the wet-bulb temperature

Answer

The relative humidity is 100 percent

Answer

The air temperature equals the dew point temperature

Question 3

Meteorology is the study of:

Accepted Answer

The atmosphere

Answer

Landforms

Answer

The oceans

Answer

Outer space

Question 4

The earth's radiative equilibrium temperature is:

Accepted Answer

The temperature at which the earth is absorbing solar radiation and emitting infrared radiation at equal rates

Answer

The temperature at which the earth is radiating energy at maximum intensity

Answer

The average temperature the earth must maintain to prevent the oceans from freezing solid

Answer

The temperature at which rates of evaporation and condensation on the earth are in balance

Question 5

Killing of animals disturbs

Accepted Answer

The balance of nature

Answer

Good for eco system

Answer

Good for man

Question 6

A biomass pyramid is important because it illustrates

Accepted Answer

The number of tropic levels in a system

Answer

How energy flows through a food web

Answer

The number of species in each tropic level

Answer

The biomass of all organisms at each tropic level in a system

Question 7

Low clouds retard surface cooling at night better than clear skies because:

Accepted Answer

The clouds absorb and radiate infrared energy back to earth

Answer

The water droplets in the clouds reflect infrared energy back to earth

Answer

The clouds start convection currents between them

Answer

The clouds are better conductors of heat than is the clear night air

Question 8

The main reason(s) for warm summers in northern middle latitudes is that:

Accepted Answer

Answer

The earth is closer to the sun in summer

Answer

The sun is higher in the sky and we receive more direct solar radiation

Answer

The days are longer

Answer

All of the above

Question 9

During an equinox:

Accepted Answer

All of the above

Answer

The days and nights are of equal length except at the poles

Answer

At noon the sun is overhead at the equator

Answer

The earth is not tilted toward nor away from the sun