Each of the following statements applies either to the formation of terrestrial planets or of jovian planets (but not both), based on our current theory of solar system formation. Drag the statements into the appropriate bin.
What will be an ideal response?
Answer:
Terrestial: accreted from planetesimals of rock and metal & surfaces dramatically altered during the heavy bombardment.
Jovian:
1. accreted from icy planetesimals,
2. ejected icy planetesimals that are now Oort cloud comets,
3.formed in regions cold enough for water to freeze,
4.large moons formed in surrounding disks of material,
5. formed in a region of the solar system with lower orbital speeds
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If the Sun was replaced by a black hole of equal mass, Earth would _____
a. fall into the black hole on a virtually straight path b. spiral in to the black hole over several months c. spiral in to the black hole over the course of several decades d. continue in its normal orbit e. spiral away from the black hole, pushed by gravitational waves
Why are X-rays and gamma rays considered dangerous forms of light? a. These forms of light are only produced by large, dangerous machines. b. There is no form of protection from these forms of light
c. These forms of light break through Earth's atmosphere. d. Photons of these wavelengths have high energy. e. These forms of light cause sunburn.
We often find dark nebulae associated with bright H II regions
Indicate whether the statement is true or false
How is the sunspot cycle directly relevant to us here on Earth?
A) The sunspot cycle strongly influences Earth's weather. B) The Sun's magnetic field, which plays a major role in the sunspot cycle, affects compass needles that we use on Earth. C) The brightening and darkening of the Sun that occurs during the sunspot cycle affects plant photosynthesis here on Earth. D) Coronal mass ejections and other activity associated with the sunspot cycle can disrupt radio communications and knock out sensitive electronic equipment. E) The sunspot cycle is the cause of global warming.