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Transcript
Our Solar System
1. Our Solar System consists of the Sun
and 9 planets
2. The Sun is a star
3. Planets look like stars but are only
visible because of light reflected from
the Sun.
Our Solar System
The Planets
Our Solar System
Day and Night
1. It takes 24 hours (1 day) for the Earth
to spin once on its axis.
2. The half of the Earth facing the Sun is
in daylight, the other half of the Earth
is in night.
Day and Night
Day and Night
Seasons
1. It takes the Earth 365.25 days (1 year)
to orbit the Sun.
2. When the Northern Hemisphere is
tilted towards the Sun it is summer
3. When the Northern Hemisphere is
tilted away from the Sun it is winter
4. In the summer, the Sun’s rays are
concentrated over a small area of land
5. In the winter, the Sun’s rays are spread
out
The Seasons
Seasons
Seasons
The Seasons
The Seasons
The Moon
1. The Moon orbits the Earth once every
28 days
2. The Moon appears to change shape
because we see different amounts of
the Moon’s lit half at different times
3. The Moon’s gravity causes high and
low tides
4. The height of the high tide depends on
the position of the Sun and Moon
Phases of the Moon
Phases of the Moon
Tides
Spring and Neap tides
Quiz
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