Random
Earth's Motion
Seasons on Earth
Moon Phases
Challenge
100
What is the imaginary line that goes from South Pole to North Pole through the center of Earth called?
Earth's axis
100
What is it called when something is spinning on an axis?
Rotation
100
Along with revolution, why does Earth have seasons?
Because of Earth's tilted axis
100
Why can we see the moon?
Sunlight reflects off it
100
A Moon is lit on the right side and getting brighter each night. What type of Moon is it?
Waxing Moon
200
A hemisphere tilted towards the Sun experiences what?
More direct sunlight = warmer weather; SUMMER
200
How long does it take for Earth to complete one rotation?
24 hours / 1 day
200
What happens when sunlight is more spread out?
It is less direct, less intense, weaker. The region is colder.
200
During a waxing moon, which side is lit?
The right side
200
What caused Earth's tilt?
Collision with a planetary body called Theia.
300
What star is Earth's axis pointed towards?
Polaris (the North Star)
300
What is Earth's movement around the sun called?
Revolution
300
When the Southern Hemisphere is in winter, what season is the Northern Hemisphere in?
Summer
300
What moon phase is less than half lit?
Crescent moon
300
How long does it take the Moon to complete one orbit around Earth?
About a month (29.5 days exactly)
400
Why does the Moon change phases?
Because it orbits (revolves) around Earth.
400
What is Earth's axial tilt in degrees?
23.5
400
What is a Solstice
When Earth's axis is tilted as far as possible towards or away from the sun
400
What phase is it if half the Moon is lit and its getting smaller?
Third Quarter
400
True/False: People in Northern and Southern Hemisphere experience the same Phase of the Moon at the same time.
TRUE! The phase of the moon is determined by where it is in orbit. The whole planet experiences the same phases at the same time.
500
True/False: We experience summer when Earth is closer to the sun because it is warmer.
FALSE; the distance from the Sun DOES NOT affect the seasons, rather the angle of sunlight.
500
What direction does the sun and moon appear to move across the sky?
East to west
500
What is an equinox?
When Earth about 12 hours of daylight and 12 hours of darkness everywhere.
500
What phase is it if the Moon is between the Earth and Sun?
New Moon
500
Why do daylight hours get longer in the summer and shorter in the winter?
Earth’s tilt changes how long the Sun stays above the horizon and how large of an arch it takes across the sky. Therefore, when tilted towards the sun, it is a larger arch=longer day light hours; and when tilted away from the sun, it is a smaller arch=less daylight hours.