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Astronomy Test
Question | Answer |
---|---|
What is in the center of our solar system? | sun |
Approximately how many miles away is the sun from Earth? | 93,000,000 miles away |
The sun is the primary source of _____________ and ____________. | light and heat energy |
What is responsible for all weather conditions on earth? | sun |
Where is the sun's energy stored? | in fossil fuels |
_________________ formed millions of years ago from the remains of ancient plants and animals. | Fossil fuels |
An object that circles around another object in space | satellite |
Planets have their own _________ or ____________ around the sun | orbit or path |
Name the terrestrial planets | Mercury, Venus, Earth, and Mars |
Terrestrial planets are made of _________________________ | rock |
Name the outer planets | Jupiter, Saturn, Uranus, and Neptune |
Outer planets are made of ____________________ | gases |
Objects orbiting around another object is called ______________. | revolution |
How long does it take the Earth to make one revolution around the sun? | 365 days or 1 year |
The eight planets revolve around the ___________________. | sun |
All planets rotate or spin on an __________________. | axis |
An imaginary line that goes through the planet on which the planet rotates | axis |
How long does it take the Earth to make 1 complete rotation on its axis? | 1 day |
The earth rotates in what direction? | westeast |
_____________ are longer during the early morning and late afternoon and shortest at noon. | shadows |
The earth is tilted on its ______________ | axis |
Sunlight strikes the earth at different angles because of the _______________. | tilt |
The Earth's tilt on its axis and its revolution around the sun cause _________________ | seasons |
What is a natural satellite of the Earth | moon |
What is atmosphere | gases around a planet, moon, or star |
What is covered in craters and has no atmosphere | moon |
How big is the moon in comparison to the earth? | 1/4 |
Does the moon have more or less gravity than Earth | less |
How long does it take the moon to complete on orbit around the Earth? | 29 days or one month |
What casues tides? | pull of the Moon's and Sun's gravity on Earth |
What are star patterns that form pictures in the night sky | constellations |
Constellations appear to move throughout the year becasue the Earth's ____________ around the Sun | revolution |
Who named the constellations | ancient Greeks and Romans |
What constellation is called the "Giant Bear" | Ursa Major |
What constellation is called the "Little Bear" | Ursa Minor |
What constellation is called "The Hunter" | Orion |
A device that points in the north-south direction and has a magnatized needle that is attracted to Earth's magnetic pole | compass |
An instrument that makes distant objects appear larger | telescope |
An ancient tool used in solving problems that involve time and the position of the Sun and stars | astrolabe |
An instrument used to measure the distance between two objects such as the horizon and a star | sextant |