A question about the geography of the first year of high school, a question of the geography of the

Option c is correct.

option a, there are two maximums for solar height, but only once for minimum.

Option b should be: the maximum occurs on the two days when the day is longest and the night is shortest.

Option C is right.

Option d, the maximum solar altitude in Beijing is:

Calculation method: the height of the sun (noon solar height) h 90° |

Among them, the latitude of the direct sun point (δ) and the local latitude ( ) The latitude of Beijing is 39 ° 54 27 , and the latitude of the Tropic of Cancer is the north latitude, then the maximum solar altitude of Beijing is 90-( degrees.

The minimum noon solar altitude at a point in the area between the Tropic of Cancer and the Tropic of Capricorn is 90-(<74 degrees.

So option d is wrong.

a The maximum value is the day on which the sun shines directly on the earth, and the minimum value is the farthest day from the point of direct sunlight.

The maximum value comes and goes once, and the minimum value twice is the farthest day from the point of direct light.

In the area between the Tropic of Cancer (excluding the Tropic of Cancer and the equator), whether the height of the sun at noon in a year is greater than that of Beijing, depending on whether the latitude distance from the direct solar point of that place is greater or smaller than the latitude distance between Beijing and the direct solar point. Therefore, the noon solar height in Beijing is smaller than the area between the Tropic of Cancer (excluding the Tropic of Cancer and the equator), and there are times when it is larger.

According to the title, the drawing can be obtained:

The direction is up, north, down, south, left, west, right, east.

The black contour line is the isobar, the left is high pressure and the right is low pressure, that is, the air pressure on the north side is high and the air pressure on the south side is low.

The wind direction at high altitude is only affected by the pressure gradient force and the geostrophic deflection force, and the wind direction is eventually parallel to the isobar.

Draw the barometric gradient force (green) first, perpendicular to the isobar, from high pressure to low pressure;

The geostrophic deflection force in the northern hemisphere to the right causes the wind to continue to deflect to the right, eventually deflecting to the west (blue), so the aircraft flies against the wind.

C, the wind blows from high pressure to low pressure, and a plane flying from east to west at high altitude in the northern hemisphere can be seen, and the left side is south, so choose C

Since you think it's A, then I'll tell you about the principle of A.

If the take-off of the aircraft is headwind, the short-distance taxiing can make the speed of the wings relative to the airflow relatively large, to meet the take-off standard, which helps to reduce the distance of the runway for take-off, and also helps to improve the climb gradient of the aircraft, which is conducive to overtaking obstacles. In the same way when landing, the aircraft can reach the required airspeed for landing at a small ground speed, so the landing distance will be reduced. When the aircraft enters the cruising phase, the tailwind is more favorable.

Generally, downwind take-offs and landings are also possible, as long as the downwind wind speed is within acceptable standards. Downwind take-offs and landings are usually due to restricted airspace at the other end of the runway or bad weather such as thunderstorms.

When flying at high altitude, the tailwind can save fuel and save flight time.

Select A, the plane flies in the stratosphere.

The wind is blowing from the north.

Northern Hemisphere High altitude, the plane flies from east to west, with high atmospheric pressure on the left side of the pilot and low atmospheric pressure on the right side.

It shows that the aircraft flew over the area between the equator and the Tropic of Capricorn.

Well, on the ground, it is the north wind (northeasterly) that blows from the subtropical high pressure zone at 30 degrees north latitude to the equatorial low pressure zone.

The horizontal movement of the atmosphere near the ground is called wind.

The wind blows from high to low pressure, initially from south to north, but !! Flying in the northern hemisphere, it is subject to the rightward geostrophic deflection force, and it is high altitude, so the final wind direction is parallel to the isobar, because the aircraft flies from east to west, it can be seen that the final wind direction is opposite to the direction of movement of the aircraft, and the aircraft flies against the wind.

So choose option A.

I've done it and no problem!

This is the determination of the direction of the wind at high altitude. Since the upper-air wind is not affected by frictional resistance, its direction is mainly determined by the pressure gradient force and the geostrophic deflection force. Here, the wind direction is from high pressure to low pressure, and at the same time, it is deflected to the right under the influence of geostrophic deflection force, and finally forms a wind direction from west to east under the balance of geostrophic deflection force and barometric gradient force.

Therefore, the aircraft flies against the wind, choose A

It can be explained in two ways:

1. It is important to know the formation of wind near the ground and high altitude: near the ground is affected by the friction of ground buildings and the geostrophic deflection force and barometric pressure gradient force, while the upper altitude is only affected by the geostrophic deflection force and the pressure gradient force.

2. The upper altitude in the question should refer to the stratosphere in the atmosphere, in the stratosphere air convection, in the case of uneven distribution of air pressure, the wind is horizontally moving and parallel to the latitude line, and the wind in the northern hemisphere is westerly, therefore, the plane flies against the wind.

I really don't understand, everyone has explained that A is correct, and a few upstairs are still talking nonsense. Especially that so-called recommended answer.

On the left is high pressure, and on the right is low pressure, so the wind blows northward.

In the Northern Hemisphere, the wind band is offset by the deflection force of the Earth's rotation and appears as a southwesterly wind.

Therefore, the plane went against the wind.

Choose A, the plane flies from east to west, the simple understanding is to fly from right to left, the pilot's left is high atmospheric pressure, the right side is low atmospheric pressure, the air pressure flows from high to low, the northern hemisphere deviates to the right, and the southern hemisphere deviates to the left, so that the wind is biased to the right and the aircraft flying to the left forms a reverse direction.

The air pressure is from high pressure to low pressure, and according to the steering force of the ground, the northern hemisphere is biased to the right, the wind blows from southwest to northeast, and because the plane blows from east to west, it flies against the wind.

Choose A. Ignoring friction at high altitude, the wind direction is parallel to the isobar, and the wind direction can be judged to be from west to east according to the geostrophic deflection force "the northern hemisphere to the right, the southern hemisphere to the left".

AThat's right, think about it, if you choose C and choose D, isn't it all crosswind flight? Then you have to choose B, and if you are elected, it will be wrong.

The force that acts on the moving air due to the rotation of the earth is called the geostrophic deflection force, or deflection force for short. It only arises when the object is moving relative to the ground (it does not actually exist), and can only change (horizontally) the direction of the object's motion, not the rate of the object's motion. Under its action, the wind turns to the right in the Northern Hemisphere and to the left in the Southern Hemisphere.

In the problem, the air pressure flows from high to low, and because in the Northern Hemisphere, the geostrophic deflection force changes the wind direction, so that the wind direction is all over the east, so a is chosen

From east to west, south on the left, choose C

Because the aircraft automatically flies to the west, the left side is high pressure, the right side is low pressure, according to the distribution of the northern hemisphere pressure zone, the aircraft is in the middle of the subtropical high pressure zone and the subpolar low pressure zone in the middle of the westerly wind belt, the westerly wind belt As the name suggests, the prevailing westerly wind, so it is a headwind flight.

It should be true, I haven't studied geography for a long time, and it's really a little rusty......

Considering the combined effect of geostrophic deflection force and horizontal pressure gradient force, frictional force.

High altitude in the Northern Hemisphere, the aircraft flies from east to west, first to southwest and then to northwest. The left is high and the right is low, and the high pressure blows to the low pressure, which is a southerly wind, and is affected by the geostrophic deflection force, which is a southwest wind, so it is a headwind for a while.

The pressure gradient force and the earth deflection force work together.

Because the wind blows from high pressure to low pressure, and the rotational deflection force in the northern hemisphere is to the right, the wind direction is southerly, so a is chosen.

From east to west, the temperature on the left near the equator is higher and the low pressure is higher, so it is a headwind.