Planets
How many planets are considered to be 'Rocky Planets'
4
What is the definition of a celestial body?
It is a non man made object outside of earths atmosphere
Do all objects have gravity?
Yes all objects have a gravitational pull
How often does Halley's Comet orbit the sun?
Every 75/76 years
Was there actually an explosion during the big bang?
No, it was a very rapid expansion of matter
What seperates Rocky Planets from Gaseous Planets?
An Asteroid Belt
What is a satellite?
Something that orbits another object
Is your Mass the same on Earth as it is on the Moon?
Yes, mass is a constant but the weight of an object is different
A comet might have 2 tails, what are the tails made up of?
One tail is a trail of rocks while the second is evaporating gas
What was the singularity before the big bang?
This was a time when matter is infinitely dense and infinitely hot
What is the largest planet in the solar system?
Jupiter
Is the International Space Station both a satellite and a celestial body?
No, it is just a satellite
What 2 factors influence the gravity of an object?
The size of the object and the proximity of the object to another object
What are the 3 different types of Asteroids?
M - Metallic, S- Silicon and C- Carbon
How long ago was the big bang?
13.8 Billion Years Ago
What is the name of the planet closest to the sun and why is it not the hottest?
Mercury, and it is not the hottest since there is no atmosphere to trap heat
Is a Meteorite considered a Celestial body?
No, it's not since it entered earths atmosphere
Would you expect the gravity on earth to be stronger or weaker than on Pluto?
Stronger, since the Pluto is smaller than Earth
How many years would a comet have to orbit to be considered a short period comet?
Less than 200 Years
What is Hubbells Law?
The farther a galaxy is from the Earth, the faster it moves away
How long does it take Mars to orbit the sun?
687 Days
What are the 3 Main Factors that influence the a planets habitability?
Composition, Distance from the sun, Atmosphere
In a vacuum (A room with no air), which object would you expect to hit the floor first, a sunflower or a brick?
They will hit the ground at the same time since there is no air resistance
Where do long period comets originate from?
The Oort Cloud
How long after the big bang was Earth formed?
9.3 Billion Years