Vocab #1
A burning ball of gas
Star
A full orbit around the sun is a called a
revolution
How many days does it take the earth to revolve around the sun?
365 days (1 year)
Why do some stars appear brighter?
They are closer to earth
What causes the different phases of the moon?
The moon reflecting light from the sun as the moon orbits earth
A celestial body that orbits a star
Planet
The term used for the earth spinning on its axis
A rotation
What is the length of one earth day? The time it takes the earth to rotate completely on its axis
24 hours
How can we tell the temperature of a star?
By its color. The hottest star will burn blue.
How many days does it take for the moon to go through its phases around the earth?
29 days
A collection of celestial bodies bound by gravity to the sun
Solar System
A name given to the outer planets
Gas Giants
What causes the seasons?
The earth's revolution around the sun, and due to the earth's axis tilt
What are the 2 types of energy given off by stars?
Light and heat
Starting with New Moon, what are the first 4 phases of the moon?
New Moon, Waxing Crescent, First Quarter, Waxing Gibbous
An unpiloted spacecraft that leaves Earth's orbit
Space Probe
A name given to the inner planets becuase they are rocky planets
Terrestrial planets
What is the largest planet in our solar system?
Jupiter
What are the planets in our solar system (in order from the sun)?
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
Starting with Full Moon, what are the last 4 phases of the moon?
Full Moon, Waning Gibbous, Third (or Last) Quarter, and Waning Crescent