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This quiz consists of 5 multiple choice and 5 short answer questions through Part 5, Chapter 17.

Multiple Choice Questions

1. During the time of the dinosaurs, Earth's magnetic field was:
(a) Same as it is now.
(b) Three times stronger than today.
(c) Fluctuating wildly.
(d) Three times weaker than today.

2. Sir Isaac Newton wrote "Mathematical Principles of Natural Philosophy," which explains his laws of what?
(a) Quantum physics.
(b) Motion and gravity.
(c) Attraction.
(d) Electromagnetic interference.

3. Approximately how many miles are there from Earth's surface to its core?
(a) 595,399.
(b) 45,599.
(c) 3,959.
(d) 695.

4. Compared to at sea level, oxygen at a few thousand feet above sea level is:
(a) More plentiful.
(b) Heavier.
(c) Thinner.
(d) Purer.

5. While he worked at General Motors Research Corporation in 1921, engineer Thomas Midgley, Jr. developed what dangerous gasoline additive?
(a) Isopropyl alcohol.
(b) Tetraethyl lead.
(c) Hydrochloric acid.
(d) Combustion catalyst.

Short Answer Questions

1. Halley believed that once scientists figured out the distance from the sun to the Earth, they could then calculate what?

2. When radiation was first discovered, it was sometimes added to:

3. The strongest earthquake ever recorded was measured off the coast of Chile in 1960. What did it measure on the Richter scale?

4. Astronomer Edmond Halley believed that the distance from the Earth to the sun could be deduced from the:

5. What is the highest elevation that humans are able to live and survive on Earth continuously without special accommodations?

(see the answer key)

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