SNC 1W1 - Astronomy Unit Review
0.0(0)
Studied by 2 people
Learn
Practice Test
Spaced Repetition
Match
FlashcardsCard Sorting
1/22
Study Analytics
Name | Mastery | Learn | Test | Matching | Spaced |
|---|
No study sessions yet.
23 Terms
1
New cards
Universe
Everything that exists including all matter and energy - started from the big bang theory
2
New cards
Galaxy
A huge collection of gas, dust and stars - gravitational pull that keeps everything in orbit
3
New cards
Astronomy
The study of what is beyond the earth
4
New cards
Solar System
The Sun, and all the objects that travel around it - e.g. planets, moons, asteroids, comets, meteoroids
5
New cards
Black Hole
A small, very dense object with a force of gravity that nothing can escape - bends space and time which comes from collapsed stars
6
New cards
Stars
Matter that emits a huge amount of energy that makes up the majority of the matter in space - an estimated billions in our universe
7
New cards
Stars
Large masses of hot gaseous material that shines by their own light and remains in a fixed position relative to one another
8
New cards
Planets
Matter that revolves around a star due to the gravitational force of the star
9
New cards
Terriral Planets: Earth Like
Inner four planets: mercury, venus, earth and mars - solid bodies composed off dense rock and metallic minerals
10
New cards
Jovian Planets: Gas Giants
Outer four planets: Jupiter, Saturn, Neptune, Uranus - primarily gaseous bodies composed of hydrogen and helium
11
New cards
Satellites: Moons
Large, natural objects that revolves around planets - every 29 days for a full moon
12
New cards
Comet
A chunk of frozen matter that travels in a very long orbit around the sun: every 20 days
13
New cards
Meteroid
A lump of rock/metal that is trapped by the earth’s gravity and pulled through the Earth’s atmosphere - asteroids that have come close to the Earth’s gravitational field
14
New cards
Meteor
As meteoroids fall, friction with the air in the Earth’s atmosphere causes it to become hot and glow - the bright streak of light
15
New cards
Meteorite
A meteoroid that doesn’t vaporize completely in Earth’s atmosphere - hits Earth’s surface leaving a crater in the earth
16
New cards
Asteroids: Minor Planets
Small rocky objects (planets) that are rich in minerals - e.g pluto
17
New cards
Light Year
the distance light travels in 1 year
18
New cards
Speed of Light
300 000 000 m/s
19
New cards
Constellation
a group of stars that appear to from a pattern -e.g Orion, Aries, Aquarius
20
New cards
Astronomical Unit (AU)
distance between the Earth and Sun: 150 million km
21
New cards
Revolution
Earth’s orbit around the Sun: 365.25 days
22
New cards
Rotation
Earth spins on an axis: 24 hours/Full Day
23
New cards
Planet Order
Sun, Mercury, Venus, Earth, Mars, (Asteroid Belt), Jupiter, Saturn, Uranus, Neptune, (Pluto)