The Earth and Sun Flashcard

Front

How long does it take for Earth to complete one revolution?

Back

One year

Front

How long does it take for the Moon to complete one revolution around the Earth?

Back

1 month

Front

Why is it daytime in the U.S. and nighttime in China when a student in the U.S. is eating lunch and a student in China is asleep?

Back

Earth's rotation

Front

What about a shadow changes as the Sun’s apparent motion in the sky changes?

Back

How long it is.

Front

Why is an August day usually hot and a January day usually cold in the U.S.?

Back

Earth's North Pole is tilted toward the Sun during the summer.

Front

The apparent motion of the Sun in the sky is from ___.

Back

east to west

Front

Which of the following can make a dark shadow? Large cloud in the sky, clear vase, window, translucent drinking glass.

Back

Large cloud in the sky.

Front

In the summer, there are _______.

Back

more daylight hours than night hours

Front

The Earth rotates at a constant speed of ___ km per second.

Back

30

Front

The apparent motion in our sky is caused by

Back

Earth's rotation