stud
bud
Sign up
Log in
Home
Library
Explore
SAT
More
Duplicate of Unit 7 Solar System Flashcards | StudBud
Explore
/
Duplicate of Unit 7 Solar System
Duplicate of Unit 7 Solar System
34 terms
·
StudBud Administration
·
17 plays
#earthsystems #astronomy
Flashcards
34 cards
F
Practice quiz
P
Host live
L
Questions
34
Answers
1
Why isn't Mercury or Venus made of ice?
The planets were too small for ices to form
It was too hot for ices to condense
Ices ended up buried beneath the surface
There is no water or methane to make ice
2
Scientists have learned about Earth's composition by
Weighing the Earth to calculate its mass and density
Drilling through the Mantle into Earth's core
seismic waves traveling through layers at different speeds
Using sonar to see into Earth's different layers
3
Why is there no longer ocean's on Mars?
The water is part of the Mars's core.
The water has infiltrated through the layers of soil on Mars
The gravity of Mars was too weak to hold it on the surface.
Mars's lower boiling point due to lower atmospheric pressure
4
Early fresh water oceans became salty when .
salt particles fell from the atmosphere into the oceans
rain water carried salty soil to the deltas and then into the oceans
large salt meteors hit the Earth
coral reefs added the salt to the ocean
5
The second atmosphere that formed above Earth was most likely due to what process?
occurrence of violent storms
development of land plants
movement of water
eruption of volcanoes
6
Where do most comets that travel through our solar system originate from? c. The Oort C
The Trojan Belt
The Crab Nebula
The Oort Cloud
Space
7
Which is the correct order of layers of the earth from MOST DENSE to least dense?
Crust, mantle, outer core, inner core
Inner core, outer core, mantle, crust
Inner core, crust, mantle, outer core
crust, outer core, mantle, inner core
8
Why did the terrestrial planets form close to the Sun while the gas planets formed far away?
Gaseous planets formed too far from Sun's gravity, gravity has no effect.
Terrestrial planets formed first.
They have low condensation temperatures,
They have a high condensation temperature
9
The second atmosphere that formed above Earth was most likely due to what process?
movement of water
occurrence of violent storms
development of land plants
eruption of volcanoes
10
What do meteorites suggest about the Earth's composition?
The 3 types of meteorites match the Earth's 3 layers
The meteorites are made from elements not on Earth
Meteorites are radioactive, dating the Earth
The meteorites are all alike and have confused scientists
11
What force causes a nebula to condense into a protostar?
strong nuclear force
electromagnetism
gravity
weak nuclear force
12
Earth's magnetosphere is most likely evidence for:
climate change
plate tectonics
Earth’s spinning,
spinning, liquid metallic outer core
13
When does a protostar become a star?
When a Super Nova happened
When the Big Bang happened
When hydrogen begins to fuse into helium
When helium splits into hydrogens
14
Where do most comets that travel through our solar system originate from?
The Crab Nebula
The Horseshoe Nebula
The Trojan Belt
The Oort Cloud
15
When the early atmosphere formed, which gases were lost because Earth’s gravity was too weak?
helium and nitrogen
oxygen and helium
helium and hydrogen
hydrogen and ozone
16
The planet that was most likely to form from metals and rocky material was:
Jupiter
Earth
Uranus
Saturn
17
How is this graph evidence for the liquid outer core? (may be more than 1 answer)
P waves travel slower in liquids
Both S & P waves travel through the Core
S waves don't travel through liquids
18
Early fresh water oceans became salty when
salt meteors hit the Earth and contaminated the fresh water
rainwater carried salty soil into the oceans.
volcanic eruptions
salt particles fell from the atmosphere into the oceans
19
Why was there an increase in O₂ in Earth's atmosphere around 650 million years ago?
decrease in plants and photosynthesis
an increase in life forms utilizing oxygen
an increase in plants and photosynthesis
the gravitational pull of the Moon
20
The image shows what process by which heat drives plate tectonics?
conduction
convection
equilibrium
isostasy
21
Which gases formed the early atmosphere?
H and He
H and ozone
Co2 and He
He and N
22
What process was responsible for the development of the oxygen in the Earth’s atmosphere?
outgassing
photosynthesis
oxidation of iron-based minerals
volcanic eruptions
23
The term for: the process where small planetesimals grow into larger planets because of gravity
The Big Bang Theory s
The Habitable Zone
The Nebular Hypothesi
Accretion
24
Why does Earth have a much thicker atmosphere than Mars does?
Mars does not have volcanoes to produce the atmosphere
It lost it magnetosphere & solar winds blew the gas away
It's in the frost line preventing it from forming atmosphere
Humans lived on Mars, destroyed it, then moved to Earth
25
Which planets are in the habitable zone?
Any planet near a star could be considered habitable
Earth, Mars, and Venus
Earth and Mars
All of the planets inside of the frost zone
26
Planets that form at a distance of less than 2.5 AUs from the Sun will be composed of
Dust and debris
Metal and rock
Water ice and ammonia ice
Rock and water ice
27
How was the moon formed?
It formed the solar system was forming
Scientists don't know
It broke off from the Earth when an asteroid struck
It was an asteroid that was captured by the Earth’s gravity
28
This process is responsible for what activity on the surface of the Earth?
formation of the magnetosphere
plate tectonics
conduction
radioactive decay
29
According to the graph, the oxygen content in Earth's atmosphere peaked when?
approximately 300 million years ago
approximately 100 billion years ago
approximately 50 million years ago
approximately 600 million years ago
30
Planets that form at a distance of 10 AUs from the Sun would most likely be composed of:
Water ice
Ammonia Ice
Silicates & rocky material
Metals
31
Why was there decrease in O₂ in Earth's atmosphere around 300 million years ago?
the gravitational pull of the Moon
an increase in plants and photosynthesis
decrease in plants and photosynthesis
an increase in life forms utilizing oxygen
32
Which of the following statements best describes how the planets of the solar system formed?
They formed from a nebular cloud of dust and gas
They are the remains of a supernova once paired with the Sun
The Sun captured them from smaller, older nearby stars.
They are condensed rings of matter thrown off by the Sun.
33
Earth's magnetosphere is most likely evidence for:
convection in the Earth's mantle
Earth’s spinning, liquid metallic outer core
plate tectonics
climate change
34
How are protoplanets made?
Black holes blow out the material in the form of pulsars
Planetesimals join together through collisions and gravity, accretion.
Gas giants lose all of their gas.
Large planets are broken through collisions with comets.
