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Astronomy
Test Description: Solar system
Instructions: Answer all questions to get your test result.
1) Our solar system formed about 4.6 billion years ago when
A
a cloud of interstellar dust and gas began to condense
B
stars collided with one another.
C
Jupiter formed the largest planet.
D
a large planet broke into many pieces.
2) One characteristic all outer planets are similar is
A
evidence of volcanic activity.
B
presence of gas and ice.
C
solid surface.
D
mass is less.
3) What evidence proved that the solar system is approximately 4.6 billion years old?
A
minerals found on the surface of Earth
B
surface of other planets
C
age of rocks from Earth and moon were determined
D
atmosphere of planets
4) The solar system formed from
A
a huge planet that broken into small pieces
B
stars explosion
C
gravity
D
cloud of gas and dust
5) How was early Earth different from Earth today?
A
The Sun was dimmer.
B
It rained more.
C
It was foggier.
D
There were more volcanic eruptions.
6) The Sun is powered by
A
fusion of helium to form hydrogen.
B
fission of hydrogen to form helium.
C
fusion of hydrogen to form helium.
D
fission of helium to form hydrogen.
7) Which evidence is often used to suggest that some mass extinction of life on Earth were caused by asteroid impacts?
A
climate change
B
unusually high amounts of iridium found in clay layers
C
High amounts of heavy elements in rocks
D
consistent volcanic eruptions
8) Early telescopes showed stars as only points of light, while the planets appeared to be much larger, providing evidence that stars must
A
travel in elliptical orbits like planets.
B
be more plentiful in our solar system than planets.
C
be much farther from Earth than planets.
D
reflect much more light than planets.
9) Most of the craters left by asteroid impacts on Earth have disappeared because of
A
Earth's gravity
B
erosion.
C
plate tectonics.
D
human activity.
10) Which planet was formed from light gases of the outer solar nebula?
A
Venus
B
Mercury
C
Jupiter
D
Mars
*select an answer for all questions
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