The gravitationally curved path an object takes around another object in space
orbit
100
The Earth revolves around its _?_.
star or sun
100
What causes our seasons?
the tilt of the Earth's axis
double your points: What is the tilt of the Earth's axis?
100
rising and falling of the Earth's ocean levels
tides
100
How long does it take the Moon to revolve around the Earth?
roughly 29 days
200
the time it takes an object to complete one orbit
revolution
double your points: How long does it take the Earth to revolve around the Sun?
200
The Earth rotates around its _?_.
axis
200
What is the shortest day in terms of sunlight of the year called?
winter solstice
double your points: Is the Earth's axis tilted towards, away or neither in reference to the Sun?
200
What force causes the Earth's tides?
gravity
200
light source for the lunar phases
the Sun
300
when an object spins on a fixed point
rotation
double your points: What is the fixed point called?
triple your points: How long does it take the Earth to rotate?
300
The Earth revolves the Sun in a _?_ motion. (Think like a clock.)
counter clockwise
300
The 2 times a year in which we get perfectly 12 hours of daylight is known as the _?_.
equinoxes
double your points: When do they occur?
triple your points: What imaginary line is getting the Sun's direct rays on these 2 days?
300
What object contributes the most pull to cause the tides?
the Moon
300
Why do we never see the "dark side" of the moon?
The moon is in a perfect synchronous rotation with the Earth.
400
the partial or complete blocking of light of one celestial object by another
eclipse
400
The shape of a planet's orbit can be described as a(n) _?_.
ellipse
double points: How many center points does an ellipse have?
400
What is the longest day in terms of sunlight of the year called?
summer solstice
double your points: Is the Earth's axis tilted towards, away or neither in reference to the Sun?
400
The highest difference between high tides and low tides are called _?_.
spring tides
double your points: Describe how they occur?
400
What do we call the phase of the Moon in which its whole disk is illuminated?
full moon
500
Earth's satellite
the Moon
500
True or False: The Sun is stationary.
False
500
The two imaginary lines on the Earth that the Sun's direct rays move between during year are _?_ and _?_.
Tropic of Capricorn and Tropic of Cancer
double your points: What is the N/S latitude of these lines?
triple your points: It is the same value as what other term?
500
What is the repeating time difference between high and low tide?
6.25 hours
double your points: How long does it take to do one entire tide cycle?
500
What do we call the phase of the Moon in which none of the its disk is illuminated?