The Sun's Energy Notes 10-23
  • 1. What is the process that allows the sun to produce heat and light?
A) Solar Reactions
B) Nuclear Reactions
C) Physical Reactions
D) Lunar Reactions
  • 2. Nuclear fusion reactions release __________.
A) space
B) time
C) water
D) energy
  • 3. In one second, the sun emits more energy that humans use in __________ years.
A) 10,000
B) 1,000
C) 100
D) 10
  • 4. The sun has been shining for how many years?
A) 5 Million Years
B) 4.6 Billion Years
C) 72 Years
D) 4 Billion Years
  • 5. The sun is mainly composed of ________.
A) hyrdogen
B) carbon dioxide
C) oxygen
D) copper
  • 6. What creates high pressure and high temperatures within the sun?
A) The inward pull
B) The outward push
  • 7. True or false. A hydrogen atom contains a nucleus with a proton and an electron.
A) True
B) False
  • 8. A gas that has electric charges is called __________. (This is the fourth state of matter.)
A) hydrogen
B) liquid
C) mixation
D) plasma
  • 9. True or false. The four states of matter are gas, liquid, solid, and plasma.
A) True
B) False
  • 10. The separation of hydrogen makes _____________ in the Sun's core.
A) nuclear fission
B) nuclear fusion
C) lunar fusion
D) lunar fisson
  • 11. At the Sun's center, the temperature is ________ million degrees Celsius.
A) 15
B) 14.6
C) 15.6
D) 16
  • 12. True or false. The sun is more dense than solid lead metal.
A) True
B) False
  • 13. Albert Einstein was an important physicist. Einstein studied __________.
A) biology
B) physics
C) geography
  • 14. The energy released by the sun during nuclear fusion is _________.
A) radiation
B) deposition
C) mixing
D) radio
  • 15. True or false. In an atom, protons that are the same will repel, or push away from each other.
A) True
B) False
  • 16. The nuclear reactions that are occurring in the sun are very powerful. If these reactions were much quicker, the sun would _________.
A) turn to ice
B) melt
C) explode
D) stop spinning
  • 17. The atoms in the sun ___________ against each other. This movement causes them to be excited.
A) spin
B) swirl
C) crash
D) vibrate
  • 18. The amount of solar energy intercepted by the Earth in one minute is approximately equal to the total electrical energy artificially generated on Earth in one __________.
A) second
B) year
C) month
D) day
  • 19. The sun emits _______ joules of radiant energy each day.
A) 3.3 times 10 to the 31
B) 3.4 times 10 to the 31
C) 19 times 10 to the 31
  • 20. True or false. The radiant energy reaching the Earth is more than what is used by the entire Earth's population.
A) True
B) False
  • 21. On a house that is run by solar energy, you would need ________ days of sunny weather to run your house for an entire month.
A) nine
B) two
C) three
D) four
  • 22. A positively charged nucleus is called an...
A) neon.
B) maxine.
C) ion.
D) iodine.
  • 23. True or false. The sun radiates energy in all directions because it is shaped like a sphere.
A) True
B) False
  • 24. Absorption bands happen when wavelengths are _______ in the atmosphere.
A) absorbed
B) moved
C) mixed up
D) listened to
  • 25. True or false. You are learning about lunar energy.
A) True
B) False
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