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Earth Geology Practices Homework

Question 8

Earth is a ‘living planet’ because it has

1. gravity and a protective atmosphere

1. liquid water and life-sustaining gases such as oxygen and carbon dioxide
2. all the previous
3. a strong magnetic field

1. a and c

Question 9

The Big Bang theory

1. explains the origin and evolution of our universe over 13 million years

1. was accepted from the start by Albert Einstein

1. was developed by a Belgian physicist, astronomer and priest

1. b and c

1. all the previous
2. Earth Geology Practices Homework Help

Question 10

Which of the following is true?

1. all the previous

1. we don’t have the physical evidence yet, but there may be a multiverse

1. b and c

1. our universe is made up of billions of galaxies, and each galaxy has billions of stars

1. our universe is expanding

Question 11

Earth has its own magnetic field that deflects the solar wind around our planet, partially shielding our atmosphere.

True

False

Question 12

The relatively mild temperatures on Earth, compared to Venus and Mars, are the result of the planet’s distance from the Sun combined with the presence of an atmosphere and a magnetic field

True

False

Question 13  

Our planet, the ‘third rock from the Sun,’ has  plenty of water and is big enough to have sufficient gravity to hold onto our atmosphere.  The gases that make up the atmosphere support life and absorb ample heat to sustain livable conditions near Earth’s surface.  Moreover, the planet’s magnetic field  protects us from the worst of space weather.

True

False

Earth Geology Practices Homework Help

Question 14

1 / 1 pts

If Earth did not have a biosphere, the composition of Earth’s atmosphere would be different.

True

False

Question 15

The lithosphere is broken into large slabs termed ‘tectonic plates.’   The lithosphere overlays the asthenosphere.

True

False

Question 16

According to The Good Earth (5th ed.), the universe is 13.8 billion years old.  According to the video narrated by astrophysicist Neil deGrasse Tyson, the universe is 13.7 billion years old.   What do you think could account for this discrepancy?  (hint: use your critical thinking skills)

1. the Hubble telescope keeps producing new information about the expanding universe

1. the information in the textbook is more up to date than that of the video

1. all the previous

1. scientific explanations are provisional and can and do change

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