Well, I like to procrastinate! So, I'm left doing my science at the last moment, and usually I have no trouble with it, but I'm having trouble with the latest assignment! So, if you could be helpful, and help me with these questions:
1. What causes air pressure in the atmosphere?
2. A simple experiment shows that a can of diet pop floats in the water while the same brand of pop, only regular, sinks. The regular can of pop contains a significant amount of dissolved sugar.
(a) How are these observations related to density?
(b) Which object is most dense?
3. How does the thermal expansion of gases produce convection currents and areas of low and high pressure in the atmosphere?
4. (a) Compared to ground-level air, the air surrounding a plane at high altitude provides less air resistance, is very cold, and contains less oxygen per cubic metre. Explain.
(b) In what way(s) do these properties help flight? what challenges do they present?
5. Which phrase is more accurate: "warm air rises in cold air" or "warm air floats in cold air"? Explain your reasoning.
6. Which two factors raise the temperature of a sinking air mass?
7. Why do clouds form in rising air mass?
8. Describe the relative air pressure in a warm air mass compared to a cold air mass.
9. High-pressure areas are associated with cooler air masses, and low-pressure areas are associated with warmer air masses. If water vapour condenses and forms clouds when it cools, why do high-pressure systems usually have clear skies, and why do low-pressure systems usually have cloudy skies?
Any help is wonderful! I appreciate it! Thanks a bunch!
1. What causes air pressure in the atmosphere?
2. A simple experiment shows that a can of diet pop floats in the water while the same brand of pop, only regular, sinks. The regular can of pop contains a significant amount of dissolved sugar.
(a) How are these observations related to density?
(b) Which object is most dense?
3. How does the thermal expansion of gases produce convection currents and areas of low and high pressure in the atmosphere?
4. (a) Compared to ground-level air, the air surrounding a plane at high altitude provides less air resistance, is very cold, and contains less oxygen per cubic metre. Explain.
(b) In what way(s) do these properties help flight? what challenges do they present?
5. Which phrase is more accurate: "warm air rises in cold air" or "warm air floats in cold air"? Explain your reasoning.
6. Which two factors raise the temperature of a sinking air mass?
7. Why do clouds form in rising air mass?
8. Describe the relative air pressure in a warm air mass compared to a cold air mass.
9. High-pressure areas are associated with cooler air masses, and low-pressure areas are associated with warmer air masses. If water vapour condenses and forms clouds when it cools, why do high-pressure systems usually have clear skies, and why do low-pressure systems usually have cloudy skies?
Any help is wonderful! I appreciate it! Thanks a bunch!