Sun Moon Earth

TEKS 4.9A, 5.9A

LOOK BACK PRESENTATION

Earth-Sun-Moon System

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What is a season?

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What is a season? continued

A season is a time of year with a distinct
pattern of temperature and sunlight. A pattern
is something that repeats in a regular way.

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What is Earth’s axis?

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What is Earth’s axis? continued

Earth’s axis is an an imaginary line from the North Pole
to the South Pole through the center of Earth.

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What is Earth’s axis? 2

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What is Earth’s axis? 2 continued

Earth’s axis is an imaginary line from the North Pole
to the South Pole through the center of Earth.

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What causes seasons to change?

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What causes seasons to change? continued

An orbit is a curved path around an object. Earth’s axis
is tilted towards or away from the sun at different points
in its orbit, so it receives different amounts of sunlight.
This causes seasons.

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What patterns in daylight can
be observed during seasons?

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What patterns in daylight can
be observed during seasons? continued

There are more daylight hours in summer than in winter.
In summer, the sun takes a long path through the sky
and reaches a higher point. In winter, the sun takes a
short path through the sky and reaches a lower point.

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What patterns in temperature can
be observed during seasons?

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What patterns in temperature can
be observed during seasons? continued

Patterns of increasing and decreasing air temperature
can be observed as the seasons change. Summers are
usually warmer, and winters are colder.