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Science 7 Unit 2A Solar System Review Flashcards | StudBud
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Science 7 Unit 2A Solar System Review
Science 7 Unit 2A Solar System Review
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1
What object in our solar system has the greatest gravitational force?
Jupiter
The Sun
Earth
The Asteroid Belt
2
Which ball would have the least amount of gravitational attraction to the red and white ball?
The purple ball
The orange ball
The green ball
The blue ball
3
What is an icy object that has an orbital path and has a visible tail?
A comet
An asteroid
A dwarf planet
A meteorite
4
What distinguishes Earth from other planets in our Solar System?
a rocky surface
existence of an atmosphere
a solid core
presence of water in all three states of matter
5
What factors influence the strength of attraction (gravity) between two objects?
size and density
composition and location in the Universe
weight and volume
mass and distance
6
There are four inner, rocky planets. They are:
Mercury, Venus, Uranus, Neptune
Jupiter, Saturn, Uranus, Neptune
Earth, Mars, Jupiter, Saturn
Mercury, Venus, Earth, Mars
7
Earth's water is thought to have formed when icy comets bombarded Earth...
during its formation.
both during and after its formation.
The answer is not here.
after its formation.
8
A ___ becomes a ___ when it lands on Earth's surface.
meteor; shooting star
asteroid; meteorite
meteor; meteorite
meteorite; meteor
9
My Very Educated Mother Just Served Us Nachos is a pneumonic device to remember what?
The order of planets according to size
The order of planets according to how many moons they have
The order of the planets starting from the Kuiper belt
The order of the planets starting at the Sun
10
A small, rocky object that orbits the Sun (mostly between Mars and Jupiter).
Meteorite
Asteroid
Meteor
Comet
11
What is believed to have caused the dinosaur extinction?
The Ice Age.
An asteroid hitting Earth.
A volcanic eruption.
A tornado.
12
The force of attraction between two objects based on their mass and distance is ___________.
Doppler effect
blueshift
gravity
dark matter
13
Which planet is considered to be Earth's "twin" due to their similar size?
Venus
Mercury
Neptune
Mars
14
The __________ ___________ allows the atmosphere to hold in heat, making Earth warm enough to support life.
doppler shift
solar wind
greenhouse effect
vernal equinox
15
What property of Earth makes it different from the other terrestrial planets?
It has an atmosphere
It has at least one moon
It has volcanos
It has liquid water
16
When meteoroids enter the earths atmosphere they...
freeze and become a comet
create a visible streak of light created by friction
disinigrate and no one ever knows it
explode and fall to the earth as ash
17
The _________________________ is our sun and all the planets and other bodies orbiting it.
solar system
galaxy
star system
constellation
18
What is true of the outer planets, farther away from the sun?
They are larger than the inner planets.
They are all blue in color.
They all have more than 60 moons.
They are all the same size.
19
An astronomical unit is the average distance between the Sun and ___________.
Earth
Venus
Mars
Neptune
20
The __________ is made of several parts: the sun, eight planets, and numerous smaller objects that orbit the Sun.
Nebula
Solar System
Galaxy
Universe
21
A small, icy object that develops a glowing tail as it nears the Sun.
Meteorite
Asteroid
Comet
Satellite
22
A planet that is made of lighter elements which are gasses is ...
a moon.
an inner planet.
an asteroid.
an outer planet.
23
All objects in the solar system follow an orbital path...
Around the Sun due to gravitational force
On a path depending on how many moons they have
Around the Earth due to gravitational force
On their own path according to their gravity
24
The rock layers contain the history of the Earth. The deeper the rock layer, the _________ the fossil.
older
younger
Depth does not determine age of fossil.
25
Moon rock composition is similar to rocks found on ________.
Saturn
Mars
Earth
Mercury
26
What planets are known as rocky or terrestrial planets?
The inner planets
The outer planets
The planets without moons
The planets with moons
27
What is the smallest planet in our Solar System?
Mercury
Pluto
Venus
Uranus
28
A planet with a solid, inner core is...
an outer planet
an inner planet
a comet
a moon
29
The force which holds our solar system together is ___________________.
superglue
scotch tape
dark matter
gravity
30
A _____ is an object that orbits a star, has a round shape, and does not have a debris field.
dwarf planet
moon
comet
planet
