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19 Cards in this Set

  • Front
  • Back
What instrument does a scientist use to study distant objects in space?
telescope
What is the Sun mostly made of?
hydrogen and helium
What is the path a planet travels as it goes around the Sun?
an orbit
What is Earth's closest and only natural satelite?
the moon
What is a force of attraction between an object and any other objects around it?
gravity
What are the eight large objects that orbit around the Sun?
planets
How long does it take our planet to make one complete trip around the Sun?
365 1/4 days or 1 year
What is a group of stars that form patterns in the night sky?
constellations
What is the tendency of a moving object to keep moving in a straight line?
inertia
What makes up the Sun and ALL the objects that are traveling around it?
solar system
What is the 3rd planet from the Sun?
Earth
What holds the Earth in orbit around the Sun?
gravity and inertia
What are different amounts of light seen on the lighted side of the Moon from Earth?
moon phases
What causes the Sun's light to shine differently throughout the year on Earth?
tilt of axis
What is our Sun's
color and size?
yellow and medium
A star's surface temperature determines what about the star?
color
How does the Earth travel around the Sun?
revolves
Most orbits are what shape?
oval
What does the Sun provide for the Earth?
light and heat