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This quiz consists of 5 multiple choice and 5 short answer questions through Part 6, Chapter 29.

Multiple Choice Questions

1. Who postponed his honeymoon in order to write a scientific paper about the movements of electrons?
(a) Ernest Rutherford.
(b) Albert Einstein.
(c) Niels Bohr.
(d) James Chadwick.

2. Of all the elements occurring naturally on Earth, how many does the author say are central to life?
(a) 1.
(b) 20.
(c) 10.
(d) 6.

3. When the KT meteor that killed the dinosaurs hit Earth, what percentage of life on the planet perished?
(a) 95.
(b) 70.
(c) 40.
(d) 15.

4. Each cell of the human body contains what length of DNA?
(a) 1.5 feet.
(b) 6 feet.
(c) 2 inches.
(d) 0.5 inch.

5. After noticing an unusual phenomenon with uranium salts and a photographic plate, Henri Becquerel asked one of his graduate students to investigate the matter. Who was this student?
(a) Wilhelm Conrad Röntgen.
(b) René Just Haüy.
(c) Marie Curie.
(d) Louise Désirée Lorieux.

Short Answer Questions

1. Trilobites are fossils of what?

2. The human body is composed of how many cells?

3. In 1971, Mike Voorhies discovered an amazing fossil bed in Nebraska full of skeletons of prehistoric animals killed 12 millions years ago. How did they die?

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

5. In 1994, scientists observed as the comet Shoemaker-Levy 9 struck Jupiter. One particular comet fragment struck the planet with a force of six million megatons, which is equivalent to approximately what?

(see the answer key)

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