Multiple Choice 1. Which of the following has a major effect on radio communicat
ID: 297038 • Letter: M
Question
Multiple Choice 1. Which of the following has a major effect on radio communication? a) Ai c) The ionosphere b) The ozone layer d) Air density r pressure 2. Of these four storms, the smallest in terms of actual size (diameter) is the a) hurricane c) thunderstorm b) mid-latitude cyclone d) tornado 3. Which below is not a process by which CO2 enters the atmosphere? a) volcanic eruptions c) condensation b) decay of vegetation d) burning of fossil fuels 4. Which below is not a primary reason for the seasons in the middle latitudes of the Northern Hemisphere? a) the closeness of the Earth to the Sun b) the angle at which sunlight reaches the Earth c) the length of daylight hours 5. If the Earth's gravitational force were to increase, atmospheric pressure at the ground would increase b) decrease c) remain the same 6. A change of one degree on the Celsius scale isa change of one degree on the Fahrenheit scale a) equal to b) larger than c) smaller than d) is in the opposite direction of 7. As the average speed of air molecules decreases, the temperature of the air increases b) decreases c) does not change 8. At what time of the day would a radiation inversion best be developed? a) at sunset d) late morning b) near sunrise e) in the afternoon when the temperature reaches a maximum c) at noorn 9. Hypothermia is most common in a) hot, humid weather c) hot, dry weather b) cold, wet weather d) cold, dry weather 10. In calm air the temperature is -10°C, if the wind speed should increase to 30 km/h (with no change in air temperature) the thermometer would indicate a) a much higher temperature than -10°C b) a much lower temperature than -10°C c) a temperature of -10°C d) a temperature of -30°C and the latitude is 11. The Coriolis force is strongest when the wind speed is a) high, low b) high, high c) low, high d) low, lowExplanation / Answer
1) C -The ionosphere has major effect on radio communication as there is presence of large numbers of free ions which enhances signal.
2) D Tornado is the smallest storm out of all these in terms of actula size that is diameter.
3) C condensation is a process where water vapor in low temperature changes to liquid state and is not at al involved in carbon dixide emission
4) A The closenes of the sun is not at all reason for the season changes on the earth
5) A - If the earth gravitaional force increases it would increase atmospheric pressure as gases would be attract with higer force towards earth
6) B - larger than ( one degree change in celsius scale gives 1.8 degree change in farenhiet scale)
7)B - speed of the air molecule decreases air temperture decreases .
8) B - Near sunrise
9) B - hypothermia is most common is cold and wet weather
10) A a much lower temperature than -10 degree celsius
Moving air disrupts this boundary layer,allowing for cooler air to replace the warm air against the surface. The faster the wind speed, the more readily the surface cools.
11) B - HIGH , high wind speed increases the effect of coriolis force and at higher latitude the coriolis effect is highest .
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.