Models & The Universe
What theory explains how the universe began from a tiny, hot, dense point?
Big Bang Theory
Put these in order from smallest to largest: Universe, Galaxy, Solar System.
Solar System → Galaxy → Universe
Whats the smallest and largest planet in our solar system?
Mercury is smallest and Jupiters is largest
whats gravity?
the force that pulls objects toward each other.
Scientists find an object made mostly of ice and dust that travels in a long orbit around the Sun. What is it?
A comet
What is a scientific model?
A tool scientists use to explain, show, or predict how something works.
What is a solar system?
A star and all the object that orbit
Which planet is closet to the sun and which is the farthest from the sun?
Mercury and Neptune
what is inertia?
the tendency of an object to resist changes in motion.
where are most asteroids found
in the Asteroid belt btw Mars and Jupiter
What scientific model placed Earth at the center of the universe?
Geocentric Model
What galaxy contains Earth and our solar system?
The Milky Way Galaxy
NAme the Terrestrial planets?
Mercury, Venus, Earth, and MArs
what is a orbit?
the path one object takes around another object.
what is a meteoroid
A small rock traveling through space.
What scientific model placed the Sun at the center of the solar system?
Heliocentric Model
Explain the difference between a meteoroid, meteor, and meteorite.
A meteoroid is in space, a meteor is burning in Earth's atmosphere, and a meteorite reaches Earth's surface.
name the gas giants?
Jupiter, Saturn, Uranus, Neptune
what is rotation?
The spinning of an object on its axis.
what is a meteor?
A meteoroid burning up in Earth's atmosphere.
Why doesn't Earth fly away from the Sun if it is constantly moving?
Earth's inertia keeps it moving forward while the Sun's gravity pulls it inward, creating an orbit.
An asteroid is found orbiting the Sun between Mars and Jupiter. Where is it most likely located?
The Asteroid Belt.
If Earth moved outside the habitable zone, what would most likely happen?
Earth would be come too cold, causing most water to freeze and making it difficult for life to survive.
What keeps planets in a stable orbit around the Sun?
Gravity and inertia work together to create a stable, curved orbital path.
What is a meteorite?
A meteoroid that reaches Earth's surface.