Read the boundary between day and night & (shaded part indicates night) A (18 minutes): (1) This is a solar term in the northern hemisphere, and the direct point of the sun is located in & uninterrupt

Read the boundary between day and night & (shaded part indicates night) A (18 minutes): (1) This is a solar term in the northern hemisphere, and the direct point of the sun is located in & uninterrupted space.

Question 1: Winter Solstice (2') Tropic of Capricorn (2')

Question 2: Antarctic circle and its southern region (2')

Question 3:2 o'clock (2') B(2')

Question 4: 14 (2')

Question 5:B(2')? C (2')

Question 6: Declining from the Tropic of Capricorn to the north and south (2')

Test analysis:

Question 1: The terminator line is tangent to the polar circle, and the polar night appears in the Arctic Circle. Judging as the winter solstice in the northern hemisphere, the direct point of the sun is located on the tropic of Capricorn.

Question 2: The picture shows extreme sunlight in and around the Antarctic Circle.

Question 3: According to the diagram, point A is the bisector of the hemisphere during the day. When the local time is 12, you can calculate D to take you to 2 o'clock. At the same time, at the same place on the same meridian, it is the same.

Question 4: When the local time at point A is 12 and the longitude is 90 E, the local time at Beijing time120 E is 2 hours earlier than 90 E, so it is 14 hours.

Question 5: Since the direct point of the sun is located in the southern hemisphere at this time, the days are getting longer and longer as the world goes south. The farther north, the shorter the day, that is, the longer the night.

Question 6: The distribution law of noon sun height: it decreases from the direct point (on the tropic of Capricorn) to the north and south sides.

Comments: The key to solving problems is to master the basic judgment method and time problem analysis method of terminator diagram, and pay attention to the induction and summary of knowledge, which is conducive to the training of problem-solving skills. This topic can also be combined with charts to examine the sun height, noon sun height, the change of day and night length and other related content.