1
The lit side of a __________ faces away from Earth. We see no moon at all.
New moon
During a _________ moon, just the edge of the lit side can be seen
crescent
An imaginary line going from Earth's north pole to the south pole
Axis
A _______ moon looks like a half-circle and is lit on the right side
first quarter
A ___________ moon looks like a half-circle, but it is lit on the left side
third quarter
The part of the Earth that points towards the sun and gets the most sunlight experiences _________
Summer
Earth's _____________ causes the cycle of day and night. One full _______________ takes 24 hours or one full day
Rotation
Tilted
Each complete trip of Earth around the sun is one _____________
Revolution
How many days does one revolution take? +300
The part of Earth that points away from the sun and gets the least sunlight experiences _____________
Winter
As we see more of the moon’s lit side, we say that the moon is ________
Waxing
How many moon phases are there?
8
The __________ change as Earth moves around the sun.
Seasons
How long does a full moon cycle take to occur
1 month
As we see less of the moon’s lit side, we say that the moon is ________
Waning
A tool that makes far away objects seem larger and closer
Telescope
Changes in the height of ocean water caused by the moon's gravity are __________
tides
Where does the moon get its light from?
Reflects light from the sun
A _________ is a ball of hot, glowing gases
Star
Name the closest star to Earth +500
Energy that can travel through space
Radiant energy
The sun’s radiant energy travels through space to Earth. Which is not an effect of radiant energy on Earth? (A) It heats up Earth’s land. (B) It heats up Earth’s oceans. (C) It lights up the daytime sky. (D) It causes objects to fall to Earth.
D
A planet is a large round body that revolves around a star in a clear orbit
Planet
Name the planets in order: +800
A __________ is made up of a star and the planets and other bodies that revolve around it.
Solar system
The _______ planets revolve around the sun more quickly than the outer planets. The ______ planets are the only planets where probes from Earth have landed
inner
It takes the ______ planets a long time to revolve once around the sun. Unlike the inner planets, the ______ planets have rings
outer