Earth in Space
Gravity and Motion
Eclipses and Tides
The Sun and Moon
Phases of the Moon
100
The path earth follows as it revolves around the sun is _________________?
Orbit
100
Attracts all objects toward each other ________?
Gravity
100
The cyclical rise or fall of ocean water is____________?
Tides
100
How long is the moon cycle phase?
28-29 days
100
Full Moon
200
The imaginary line that passes through Earth's center and the North and South poles is __________?
Axis
200
The man who discovered the concept of gravity was ______________?
Isaac Newton
200
There are 2 _________tides and 2 __________ low tides every day.
high and low
200
How many phases of the moon are there?
8 phases
200
First Quarter Moon
300
The spinning of Earth on its axis is____________ and how often does this happen___________?
Rotation and every 24 hours
300
The force of an object to resist a change in motion is _________?
Inertia
300
Tides are mainly caused by ___________?
How much the moon's gravity pulls on different parts of Earth.
300
The 2 longest days of the year when the sun reaches its greatest distance North or South of the Equator. Happens in June and December.
Solstice
300
Waning Crescent
400
The movement of one object around another object is _________________ and how does earth do this to the sun___________
Revolution and every 365 days
400
The strength of gravity is affected by what 2 things?
1.
2.
distance and mass
400
When the moon passes directly between Earth and the sun, blocking sunlight from Earth is is called a __________________________?
Solar Eclipse
400
The two days of the year when day and night are equal . Happens in March and September.
Equinox
400
Waxing Crescent
500
Why does the earth have seasons?
Because the Earth's axis is tilted. As it revolves arount the sun, the end that is tilted toward the sun is summer and the end that is tilted away from the sun is winter.
500
How does Earth remain in orbit around the sun?
Gravity pulls Earth toward the sun and
Inertia keeps Earth moving forward.
500
When the earth is between the sun and the moon and the Earth blocks sunlight from reaching the moon it is called a_______________________?
Lunar Eclipse
500
Explain the "back side of the moon"?
It is not visible from Earth because it always faces away from Earth. The moon does not rotate, it only revolves around the Earth.
500
A. B.
A. Waning Gibbous
B. Waxing Gibbous