Rotation and Revolution
What is rotation?
Earth spins around its own axis; causes day and night; 24 hours.
Define moon phases
Sample:
As the moon orbits Earth, different portions of its sunlit half are visible.
7. Earth moves through space by spinning on its axis and by orbiting the sun. What will happen between January 1, 2012 and January 1, 2013?
A Earth will complete 1 rotation.
B Earth will complete 12 rotations.
C Earth will complete 1 revolution.
D Earth will complete 365 revolutions.
C Earth will complete 1 revolution.
The stars appear to move across Earth’s sky. Which statement explains why this happens?
A The stars rotate.
B Earth orbits the sun.
C The moon orbits Earth.
D Earth rotates on its axis.
D Earth rotates on its axis.
What are constellations?
Groups of stars
What is revolution?
the movement of the Earth around the Sun in a fixed path; 365 days
none of it!
Kashvi likes to look out the window at the moon. She observes that it seems to change every week. Which sentence best explains why this happens?
A The moon moves between Earth and the sun.
B The moon rotates only once in about a month.
C The same side of the moon always faces Earth.
D The amount of the lighted part of the moon that faces Earth changes.
D The amount of the lighted part of the moon that faces Earth changes.
If you look up at the night sky long enough, the stars will appear to move across the sky. What is responsible for making the stars appear to move across the sky at night?
A Earth’s revolution
B Earth’s rotation on its axis
C Earth’s position in its orbit
D Earth’s distance from the sun
B Earth’s rotation on its axis
Why do stars move at night?
The sun rises and sets each day. What causes this to happen with the Sun?
Rotation of Earth
How much of the moon do we see in a full moon?
all of it
Name all of the moon phases.
Some constellations are visible from different places on Earth only during a part of the year. Why are certain constellations not visible everywhere on Earth all year long?
A sun’s rotation
B Earth’s rotation
C sun’s revolution
D Earth’s revolution
D Earth’s revolution
How does Earth's rotation affect the way we view the moon, the sun and the stars around us?
As the spin of the Earth carries us eastward at almost one thousand miles per hour, we see stars rising in the East, passing overhead, and setting in the West.
How much of our revolution around the Sun will Earth have completed in six months?
Earth will have completed 1/2 of its trip around the sun.
Why does the moon appear to change throughout the month?
The sun light reflected off of it.
The same side of the moon always faces Earth. Why is this?
A Half the moon faces the sun.
B The moon does not rotate like Earth does.
C The moon's revolution and rotation are about the same length.
D Earth blocks part of the sunlight that shines on the moon's surface.
C The moon's revolution and rotation are about the same length.
Caroline looks up at the night sky on a clear night. She is searching for patterns of stars in the sky. What is Caroline looking for?
A planets
B galaxies
C constellations
D other planets’ moons
C constellations
We have some constellations that we can only see in the summer. Why can some constellations be seen only in the summer?
Earth revolves around the Sun.
What would happen if Earth took longer than it already does to rotate on its axis?
We would have longer days.
Our days and nights would not match up anymore.
On April 20th, a student saw that the moon appeared at a full moon. The next week, the moon was in a different phase. What would best describe why the student saw a different phase from week to week?
People on Earth see the moon every night. Sometimes people also see the moon during the day. Why does this happen?
A The moon makes its own light.
B The moon moves closer to Earth.
C The moon is reflecting light from Earth.
D The moon is reflecting light from the sun.
D The moon is reflecting light from the sun.
Stars form patterns known as constellations. People on Earth have given the constellations names. Why can we see different constellations at different points throughout the year?
A The constellations that appear depend on the time of night.
B The constellations that appear depend on the season of the year.
C Different constellations form the same pattern of stars in the sky.
D Some constellations appear only in the Northern Hemisphere and others appear only in the Southern Hemisphere.
B The constellations that appear depend on the season of the year.
Louis observes that he can see some patterns during the summer, but not during the winter. Which motion causes his observation?
Earth revolving around the sun