Why do scientists study smaller objects in the solar system?

scientists can use them to study the early solar system

A nebula is held together by the balance of

inward force of gravity and outward pressure

Why do planets with atmospheres have fewer impact craters?

the air slows smaller objects down and they burn

Why is Venus considered Earth's twin?

Venus has similar size and density

Which are characteristics of comets?

give off gas and dust when heated by the sun

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Humphreys Solar System

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6th grade science

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Questions 20

Answers

1
Saturn's rings are mostly composed of
liquid rock
trillions of small icy bodies
hydrogen gas
solid bands of ice and rock
2
Planet with the greatest temperature range due to its lack of an atmosphere
Venus
Saturn
Mercury
Mars
3
Planet with the largest mountain in the solar system?
Venus
Mars
Earth
Mercury
4
Why do scientists study smaller objects in the solar system?
they provide a light show when they burn up
scientists can use them to study the early solar system
they come from a region just beyond the orbit of Neptune
they orbit further out than we send space missions
5
Jupiter is mostly composed of what gases?
water vapor and carbon monoxide
oxygen and nitrogen
carbon dioxide and oxygen
hydrogen and helium
6
Because Saturn gives off more energy than it takes in we know that
Saturn contains helium gas
Saturn is very massive
Saturn is still forming
Saturn has storms in its interior
7
The asteroid belt is
between Mars and Jupiter
between Jupiter and Saturn
between Mercury and Jupiter
between Mars and Venus
8
A nebula is held together by the balance of
high and low temperatures
inward force of gravity and outward pressure
high and low kinetic energies
outward force of gravity and inward pressure
9
How can you tell that Mercury is not a gas giant?
because it has only one moon
because it is dense and rocky
because of where it orbits the sun
because it has no ring system
10
How do you know Venus is not a gas giant?
the size of its orbit
its distance from the sun
its closeness to the Oort cloud
its density
11
Why do planets with atmospheres have fewer impact craters?
the air slows smaller objects down and they burn
fewer objects orbit near these planets
most impacts occur in remote areas
many objects land in the ocean
12
Why is Venus considered Earth's twin?
Venus was born at the same time
Venus rotates in the same direction
Venus has similar size and density
Venus' air has the same gases
13
How do asteroids and meteoroids differ?
they affect the earth differently
Meteoroids hit earth and asteroids don't
they are different sizes
Asteroids orbit the sun and meteoroids don't
14
A planet that spins with retrograde rotation
Jupiter
Mercury
Venus
Mars
15
Astronomical units measure the distance
that light travels in 1 minute
between Mars and Jupiter
between the sun and earth
between Mercury and Pluto
16
Which gas traps the most heat in Venus' atmosphere?
nitrogen
carbon dioxide
oxygen
argon
17
Which are inner planets?
Mercury, Earth, Jupiter, Saturn
Pluto, Saturn, Venus, Uranus
Mercury, Venus, Earth, Mars
Saturn, Jupiter, Uranus, Neptune
18
The planet tipped on its side
Uranus
Neptune
Venus
Saturn
19
A planet that has a clockwise rotation
Mars
Earth
Uranus
Mercury
20
Which are characteristics of comets?
rich in iron
follow a circular orbit around the sun
give off gas and dust when heated by the sun
composed of rocks, iron and nickel

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