Download Chapter 1 Notes for Earth Science

Chapter 1 Notes for Earth Science
Sun and Planets
-Earth revolves, or travels around, the sun.
-It takes on year to revolve once around the sun.
-The path Earth takes around the sun is its orbit.
-Inner planets are Mercury, Venus, Earth, and Mars.
-Outer planets are Jupiter, Saturn, Uranus, and Neptune.
-Inner planets are smaller and made of rock.
-Outer planets are bigger and made of gasses.
Day and Night
-Earth rotates, or spins, on its axis.
-It takes 24 hours for the Earth to rotate one time.
-The Earth’s rotation causes day and night.
-When we face the sun, it is day.
-When we are not facing the sun, it is night.
-Because Earth never stops rotating, it looks like the sun is moving.
-The sun appears to rise in the east and set in the west.
-When the sun is low in the sky, like in the morning and late
afternoon, your shadow will be long.
-In the morning, your shadow will stretch to the west.
-In the afternoon, your shadow will stretch to the east.
-When the sun is high in the sky, like at 12:00 noon, your shadow will
be short.
Earth and Moon
-The moon is Earth’s closest neighbor.
-The moon revolves around Earth.
-The moon is much smaller than Earth.
-A satellite is a smaller object that orbits a larger object.
-The moon is a satellite of Earth.
-It takes one month (28 days) for the moon to revolve once around
Earth.
-The moon and Earth rotate and revolve.
-The light of the sun bounces off the moon toward Earth, allowing us
to see the moon.
-Phases are the lighted shape of the moon as seen from Earth.
-New Moon is when the moon is in between the Earth and the sun
and we cannot see it from Earth.
-Full moon is when the whole moon is lighted and Earth is in between
the moon and the sun.
-Crescent moon is when a banana shape is lighted.