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Astronomy Test

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
Created by: PRES4thGrade