Listening: Earth's tilt and the seasons

Answers and an explanation for each question appear once you add this activity to your own library.

B1 | Listening from video | 11 min

Watch the video (0:07 - 4:34). You can watch more than once, then answer the questions.

ONE WORD from the video.

Early in Earth's history, it was hit by a rock the size of ____ .

What formed from the pieces of the big crash?

____ The Earth's oceans____ The planet Mars____ The Earth's moon

The Earth's axis is tilted at about 45 degrees.

____ True____ False____ Not Given

What keeps Earth's tilt fairly stable?

____ The pull of the moon's gravity____ The heat from the Sun____ The speed of its daily spin

ONE WORD from the video.

When the Northern Hemisphere angles towards the Sun, light strikes it more ____ .

A NUMBER from the video.

About every ____ years, Earth's tilt changes a little and then changes back.

What can happen when Earth's tilt becomes smaller?

____ Summers at the poles get much hotter.____ Ice can build up and start a glacial period.____ The seasons become more extreme everywhere.

Scientists use satellites to measure Earth's axial tilt.

____ True____ False____ Not Given

What is one possible result if Earth had no tilt?

____ The tropics would get cold and the poles hot.____ The seasons would last much longer than now.____ Ice sheets could grow until ice covers the planet.

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