The Sun, Moon and Earth Flashcards
Study
How long does it take the moon to orbit around the Earth and spin on it’s axis?
29 1/2 days.
What type of celestial body is the moon?
A satellite.
What does gibbous mean?
When a moon or planet is more than half but less than fully illuminated.
What does crescent mean?
The curved sickle shape of a waxing or waning moon.
What does waxing mean?
The visible surface of the moon increases in size, leading up to a full moon.
What does waning mean?
The visible surface of the moon decreases in size, leading up to a new moon.
What degree is the earth tilted on?
23.5 degrees.
What direction does the earth rotate?
Anticlockwise.
What type of energy is released from the sun?
Solar radiation.
Why is the sun important to the solar system?
Provides visible light, prevents planets from drifting away, protects us from cosmic radiation, and creates radiation, and photosynthesis.
What type of rays are emitted from the sun?
Visible light, ultra-violet radiation, infrared radiation, x-rays and gamma rays.
What side of the moon is illuminated when it’s waning?
Left side.
Which side of the moon is illuminated when it’s waxing?
Right side.
