MP1 Exam Review

Quiz
•
Science
•
9th Grade
•
Medium
+4
Standards-aligned
Jonathan Figueiredo
Used 1+ times
FREE Resource
30 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is nuclear fusion?
A process where atomic nuclei combine to form a heavier nucleus
A process where atomic nuclei split into lighter nuclei
A chemical reaction involving the exchange of electrons
A method of generating electricity using water
Answer explanation
Nuclear fusion is the process where atomic nuclei combine to form a heavier nucleus, releasing a significant amount of energy. This is different from nuclear fission, where nuclei split into lighter ones.
Tags
NGSS.HS-ESS1-1
NGSS.HS-PS1-8
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What atoms are currently fusing together in the Sun? How many do you need to result in the fusion process?
Hydrogen atoms, 4
Helium atoms, 2
Carbon atoms, 6
Oxygen atoms, 8
Answer explanation
In the Sun, hydrogen atoms are fusing together. Specifically, four hydrogen nuclei combine through nuclear fusion to form one helium nucleus, releasing energy in the process.
Tags
NGSS.HS-ESS1-1
NGSS.HS-PS1-8
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Where does nuclear fusion take place in the Sun?
Core
Photosphere
Corona
Chromosphere
Answer explanation
Nuclear fusion occurs in the Sun's core, where temperatures and pressures are extremely high, allowing hydrogen nuclei to combine and form helium, releasing energy. The other layers, like the photosphere, corona, and chromosphere, do not facilitate fusion.
Tags
NGSS.HS-ESS1-1
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the interior features (layers) of the Sun?
Core, Radiative Zone, Convective Zone
Crust, Mantle, Core
Troposphere, Stratosphere, Mesosphere
Lithosphere, Asthenosphere, Mesosphere
Answer explanation
The Sun's interior consists of three main layers: the Core, where nuclear fusion occurs; the Radiative Zone, where energy is transferred by radiation; and the Convective Zone, where energy is transported by convection.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The Sun is considered a stable star because:
It has a constant energy output.
It is the largest star in the galaxy.
It changes its size frequently.
It is the closest star to Earth.
Answer explanation
The Sun is considered a stable star because it has a constant energy output, which allows it to maintain a steady state over billions of years, unlike stars that frequently change size or have variable outputs.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a star?
A celestial body that produces light and heat
A type of planet
A satellite orbiting a planet
A comet in the solar system
Answer explanation
A star is defined as a celestial body that produces light and heat through nuclear fusion. This distinguishes it from planets, satellites, and comets, which do not generate their own light.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What elements are stars composed of?
Hydrogen and Helium
Oxygen and Nitrogen
Carbon and Silicon
Iron and Nickel
Answer explanation
Stars are primarily composed of hydrogen and helium, which make up about 98% of their mass. Other elements like oxygen, carbon, and iron are present in much smaller amounts.
Tags
NGSS.HS-ESS1-3
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