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Question 1

Which of the following principles is a characteristic of good science?


b. scientific explanations should be predictable and testable


e. b and c


d. all the previous


a. scientific explanations are provisional and can and do change


c. a valid scientific hypothesis offers a well-defined natural cause or mechanism to explain a natural event


Question 2

The demise of the dinosaurs has been explained by different hypotheses.  Which of the following could not be readily tested, because it violated a principle of good science which states that scientific explanations should be predictable and testable?


c. volcanic eruptions


b. an asteroid impact with Earth


d. a and c


a. the evolution of flowering plants affected dinosaur eating habits


Question 3

Which of the following is a ‘big idea’ in earth science?


a. Earth is 4.6 billion years old and is continuously changing


b. Earth scientists use repeatable observations and testable ideas to understand an explain our planet


e. a and c


c. Earth is a complex system of interacting rock water, air, and life.


d. all the previous


Question 4

Earth scientists


c. want to protect the health of the environment and ensure the future of human life


d. all the previous


b. promote finding and sustaining Earth’s resources


e. a and b only


a. play a vital role in understanding and determining the potential risks from natural phenomena that may harm people and damage property


Question 5

Most, but not all of the United States is within the Midlatitudes–think of northern Alaska, Hawaii, and Puerto Rico. The Midlatitudes are areas of our planet that do not receive as much solar energy as the Tropics, but receive plenty more that the Polar regions.  The Midlatitudes are found in


e. a and b


a. in both the Northern and Southern Hemispheres


c. between the Tropic of Capricorn and the Antarctic Circle


b. between the Tropic of Cancer and the Arctic Circle


d. all the previous


Question 6

Insolation is greatest


b. the Midlatitudes


No answer text provided.


a. the Tropics


c. the Polar regions


Question 7

The lithosphere is made up of


b. the uppermost mantle and the crust, both continental and oceanic


a. the asthenosphere and the crust


d. a and b


c. the continental crust


Question 8

Earth is a ‘living planet’ because it has


c. gravity and a protective atmosphere


a. liquid water and life-sustaining gases such as oxygen and carbon dioxide


d. all the previous


b. a strong magnetic field


e. a and c


Question 9

The Big Bang theory


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


c. was accepted from the start by Albert Einstein


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


e. b and c


d. all the previous


Question 10

Which of the following is true?


d. all the previous


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


e. b and c


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


a. our universe is expanding


Question 11

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






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.






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.






Question 14

1 / 1 pts

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






Question 15

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






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)


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


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


d. all the previous


c. scientific explanations are provisional and can and do change


Question 17

How many galaxies are there?   While estimates among different experts vary, an acceptable range is between _________________ galaxies.  Some astrophysicists calculate that two trillion galaxies should exist within our observable Universe, but there is no direct evidence for that yet.



a. 100 million to 200 million


c. 100 thousand to 200 thousand


No answer text provided.


b. 100 billion to 200 billion


Question 18

The concept that may explain how our Sun and the planets revolving around it originated and evolved is called the


d. none of the above


b. Solar system model


c. the Nebular hypothesis


a. Big Bang model


Question 19

It is the earth’s relationship to the sun, and the amount of light it receives, that is responsible for the 


a. different climate types around the planet


c. biodiversity


e. a and b


b. the seasons


d. all the previous


Question 20

You and I live in the 


No answer text provided.


a. Tropics


c. Polar regions


b. Midlatitudes


Question 21

The best hypotheses are logical and can be readily tested by experiment or by more observations.  Continued observations over time will either confirm that a hypothesis is accurate or reveal that is is not quite right and needs to be either further refined or rejected.  New information sometimes becomes available with the development of increasingly sophisticated technology and may lead to minor or major changes in existing hypotheses.






Question 22

In science, a theory is not just an opinion or a guess; it is a well-supported explanation of a natural phenomenon.  A theory, therefore, is the same as a hypothesis.






Question 23

Because of Earth’s unique distance from the Sun, the planet is able to contain water in all of its forms: liquid, ice, and gas. (hint:  think of what would happen to water in Venus and Mars).






Question 24

According to current evidence, the Earth is about 4.5 billion years old, and life here began around 3.8 billion years.  It’s possible that future new evidence may show that life on Earth began even earlier.






Question 25

Planet Earth is unique because it is within the only known solar system in our galaxy.






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