Current Solar System quiz
Quiz
•
Science
•
7th Grade
•
Practice Problem
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Medium

Hollie Lewis
Used 4+ times
FREE Resource
12 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the Sun primarily composed of?
Helium
Hydrogen
Oxygen
Carbon
Answer explanation
The Sun, like most stars, is primarily composed of Hydrogen. Hydrogen fuses together to form Helium in a process called nuclear fusion, which powers the Sun. The other options of Oxygen and Carbon are present but in much smaller quantities.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which gas makes up the largest portion of Earth's atmosphere?
Oxygen
Carbon Dioxide
Nitrogen
Hydrogen
Answer explanation
The question asks about the gas that comprises the largest part of Earth's atmosphere. The correct answer is Nitrogen. Nitrogen makes up approximately 78% of the Earth's atmosphere, a much larger proportion than other gases such as Oxygen or Carbon Dioxide.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is NOT true about the Moon?
It has no atmosphere
It has a day- night cycle similar to Earth
It is tidally locked to Earth
It is larger than Earth
Answer explanation
The Moon is not larger than Earth; in fact, it's significantly smaller. The other statements are true: the Moon has no atmosphere, it has a day-night cycle, although it's different from Earth's due to being tidally locked, meaning it always shows the same face to Earth.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is NOT a characteristic of the Moon's surface?
Presence of craters
Presence of mountains
Presence of water bodies
Presence of valleys
Answer explanation
The moon's surface is known for its craters, mountains, and valleys, all created by meteor impacts. However, it lacks significant water bodies. While there is water on the moon, it's mostly in the form of ice trapped in permanently shadowed areas. There are no bodies of liquid water like lakes, rivers, or oceans.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How long does it take for full orbit of the Earth around the sun?
365 days
24 hours
1 month
6 minutes
Answer explanation
The correct answer is '365 days'. This is because it takes approximately 365.25 days - often rounded to 365 - for Earth to complete a full orbit around the sun. This period of time is known as a solar year.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is NOT true about the Moon's rotation?
It rotates on its axis
It rotates at the same speed as Earth
It rotates in the same direction as Earth
One side of the Moon is always facing Earth
Answer explanation
The Moon rotates on its axis and in the same direction as Earth, which is why we always see the same side of it. However, its rotation speed is slower than Earth's. Therefore, the statement 'It rotates at the same speed as Earth' is not true.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the time taken by the Earth to rotate once on its axis?
365 days
24 hours
1 month
6 minutes
Answer explanation
The Earth takes approximately 24 hours to rotate once on its axis. This is commonly referred to as a 'day'. The other options including 365 days (a year, which is the time taken by the Earth to orbit the Sun), 1 month, and 6 minutes are incorrect in this context.
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