8 SCIENCE HW1~BEYOND THE EARTH

Welcome to your 8 SCIENCE HW1~BEYOND THE EARTH

Type your full name.
What do we call the planets without a star?
What is known as the collection of eight planets and their moons in orbit around the sun, together with smaller bodies in the form of asteroids, meteoroids, and comets?
What pulls the planets toward the sun?
What force attracts any two objects with mass?
What is any natural body outside of the Earth's atmosphere?
What are the THREE criteria to be recognized as a planet?
What planet is downgraded into a dwarf planet?
How do stars help us?
What is the nearest star?
Give THREE descriptions about ASTEROIDS.
Give THREE descriptions about METEORS.
Give TWO descriptions about COMETS.
Give TWO descriptions about NEBULAE.
Who proposed Planetesimal Theory?
What theory that speculated that the sun has a twin?
What is the name of the companion star of the sun?
Who proposed Companion Star Theory?
What theory believes that the Solar System is created due to a spinning nebula and later became flattened?
Who proposed Nebular Hypothesis?

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