Exam Review Essay

Words: 2468
Pages: 10

Chapter 1
Review Questions 1. What is the goal of science?
The major goal of science is to ask & answer questions about the physical universe that we live in.

2. How is observation different from imagination?
Observation gathers only what data is obviously true. Imagination can go anywhere—factual or not.

3. Write an equation in words & then in symbols for the following sentence: The price of coffee beans is equal to the weight of the beans times the price of the beans per pound.

Cost of Beans (C) = Weight of Beans (Wb) x Cost per pound (Cp) (C) = (Wb) x (Cp)

4. Write an equation in words & then in symbols for the following sentence: The change in the number
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In his time the telescope had not been invented. All observation was with the naked eye. Tyco gathered 25 years of extremely accurate data.

4. What was Kepler’s role in interpreting Tyco Brahe’s data?
Kepler was a brilliant mathematician. He had access to a large amount (25 years) of the most accurate astronomical measurement available to mankind (the data of Tyco Brahe). It was Kepler that first demonstrated that the orbits of the planets around the sun were elliptical and not circular. Also, from this data came Kepler’s Laws of Planetary Motion.

5. How did Galileo apply the scientific method to his study of falling objects?
Galileo is especially known for his work in experimental techniques. He studied falling objects by doing repetitive experiments and making careful measurements. He is most famous for his work of bodies moving down an inclined plane. After his observations he would try to define his observations mathematically. Then he would test the hypothesis further by experimentation.

6. According to Newton, what are the 2 kinds of motion in the universe? How did this view differ from those of previous scholars?
Newton described uniform motion & accelerated motion. Previous to Newton, scientists thought that moving bodies (i.e. planets) moved in circles & would continue moving in circles if left alone. Thus, for an object to move in a circle some outside force must be affecting it. Newton showed that there was