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What is the universe? The universe is a vast expanse of space which contains all of the matter and energy in existence.
What does a universe contain? The universe contains all of the galaxies, stars, and planets.
What is the exact size of the universe? Scientists never know the exact size of the universe because it's still expanding outward.
Why does the universe keep expanding? The universe keeps expanding because a belief of o powerful explosion, known as the big bang that happened about 13.7 billion years ago.
What is the solar system? Solar system refers to the sun and all the objects that travel around it.
What is the shape of our solar system and what is it called? Our solar system has an elliptical shape and and is part of a galaxy known as the Milky Way.
Where is the sun in the solar system? The sun is in the center, it contains 99.8% of the mass.
What are two of the beliefs of how the solar system was formed? The solar system was formed by a flat cloud of gas or when a huge object passed near the sun with a stream of gas off of the sun.
What are the planets in order? Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune.
How many planets are there? 8
Which direction do all the planets move in? Counter Clockwise and the same direction.
Which planet is the one with the big flat rings? Saturn.
What are the planets when they are closer to the sun? Warmer.
What do the planets and moon shine by? Reflected sunlight
Which planet is the only planet to have liquid water? Earth.
What does the earth do when it's closer to the sun? It goes faster.
What is moonlight really? Sunlight.
Why does the moon reflect so much light? It does because there's nothing to absorb the light so it reflects on the moon.
How are tides caused? Tides are caused by the moon's gravity.
Why don't we get an eclipse every month? We don't because the moon's orbit is on a tilt.
How did ancient astronomers figure out that the earth was round? They found out that the earth was round when they saw the earth's shadow on the moon.
How does the gravity on the moon compare to the gravity on earth? The moon has 1/6 the gravity of earth.
If you weigh 60 lbs on earth what would you weigh on the moon? You would weigh 10 lbs on the moon.
How does the gravity on earth affect the moon? It affects the moon by the moon causing moonquakes.
What is the 1st phase of the moon? New moon.
What is the 2nd phase of the moon? Waxing crescent.
What is the 3rd phase of the moon? First quarter.
What is the 4th phase of the moon? Waxing gibbous.
What is the 5th phase of the moon? Full moon.
What is the 6th phase of the moon? Waning gibbous.
What is the 7th phase of the moon? Last quarter.
What is the 8th phase of the moon? Waning crescent.
What is the earth's satellite? The moon.
What is the belief of how the moon was formed? Scientists think that when the earth collided with another space object. The earth's gravity caused this rocky debris to fall into orbit, becoming our moon.
What is the dark areas on the moon filled with? The dark areas are filled with basalt.
What is the surface on the moon? The surface of the moon is covered by a fine-grained soil called regolith, this grain is from the constant meteorites.
What is an asteroid? A small rock, carbon or metal that obits the sun.
What is a comet? A small object made out of ice and dirt and they have tails made out of dust and gas.
What is a meteoroid? A small particle from an asteroid or comet.
What is a meteor? A meteoroid that burns up in the earth's atmosphere.
What is a meteorite? A meteoroid that collides with the earth.
Created by: ghua