- 1. What process occurs within the sun?
A) chemical reaction B) fusion C) combining D) fission
- 2. True or false. Nuclear reactions within the sun produce heat and light.
A) False B) True
- 3. The sun is mainly composed of what?
A) Oxygen B) Carbon C) Hydrogen D) Nitrogen
- 4. What creates high pressure and temperature within the sun?
A) Inward pull due to gravity B) The Core C) Oxygen combining with Hydrogen D) Chemical reactions within the sun
- 5. A Hydrogen atom contains a nucleus that is made up of ________?
A) Protons and Electrons B) Neutrons and Electrons C) Neutrons and Protons
- 6. The fourth state of matter, which can be found inside the sun, can be considered ____________.
A) Waves B) Energy C) Plasma D) Volume
- 7. True or false. The pressure of the sun squeezes particles so tight that they become hot.
A) True B) False
- 8. True or false. When atoms vibrate, thermal energy (heat) is created.
A) False B) True
- 9. True or false. All the sun's radiant energy reaches Earth?
A) True B) False
- 10. Some of the radiant energy released by the sun is absorbed by _____________ before it reaches the Earth's surface.
A) The oceans B) The Moon's surface C) The Earth's crust D) The atmosphere
- 11. True or false. A positively charged nucleus is called an ion.
A) False B) True
- 12. True or false. Nuclear fusion cannot occur outside the solar core.
A) True B) False
- 13. Radiation occurs when objects __________________.
A) do not directly touch each other. B) directly touch each other.
- 14. Energy leaves the Sun as _______, and the other part of this that constitutes visible light is what makes the Sun shine.
A) power B) light C) radiation D) energy
- 15. Much like the same poles on a magnet, the rate of nuclear reactions in the Sun is relatively low, because protons _______ each other. This often prevents them from being able to fuse together.
A) attract B) repel
- 16. True or false. All of the radiation emitted from the sun reaches the Earth in the form of heat.
A) False B) True
- 17. If the pace was much ________, the sun would explode like a giant hydrogen bomb.
A) weaker B) faster C) slower D) stronger
- 18. The sun gives off ________ as light energy.
A) Neutrons B) Power C) Electrons D) Photons
- 19. On Earth, lightning is an example of ________________, this is commonly referred to as the fourth state of matter.
A) solid B) plasma C) liquid D) gas
- 20. True or false. The sun radiates energy in all directions because it is a sphere shape.
A) False B) True
- 21. Some of the energy from the sun is reflected by _____ and ______.
A) air, oxygen B) space, planets C) clouds, atmosphere D) trees, building
- 22. Which process of heat transfer occurs when an object directly touches another object?
A) convection B) conduction
- 23. True or false. Magma heating itself underground is an example of convection?
A) False B) True
- 24. Which of these is a process that does NOT transfer heat?
A) conduction B) convection C) photosynthesis D) radiation
- 25. Radiation is the transfer of heat between two objects that...
A) are touching. B) are not touching.
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