A. a Test Exists to See Whether It Is Valid

Physics 1 ---Quiz #1

1. A hypothesis is scientific if a. a test exists to see whether it is valid. b. a test exists to see whether it is invalid. c. a test exists to see whether it is either valid or invalid. d. it is expressed in scientific terminology.

2. A scientific theory should a. be valid. b. be useful in predicting new phenomena. c. be useful in explaining previously observed phenomena. d. be (a) & (b). e. be [b] & [c]

3. An epismic theory explains a. Why processes have the properties that they do. b. How things function. c. The underlying structure of matter. d. How scientific ideas are expressed.

4. In science a theory is

a. an educated guess. b. less than a fact. c. a synthesis of a large body of well-tested knowledge. d. unchangeable.

5. Concepts are useful because a. they are a poetic expression of reality. b. they describe a common property found in many individual 'facts'. c. they are used in scientific theories. d. they are taught at universities. 6. Which of the following is a scientific hypothesis? a. Aliens will abduct you while you answer this question. b. There are things we will never know about during human existence c. Matter is filled with undetectable particles called dions. d. There are parts of the universe that will never be found by man. e. none of these

7. The statement, "There are regions beneath the earth's crust that will always be beyond the reach of scientific investigation," is a a. fact. b. proven. c. hypothesis. d. scientific hypothesis. e. theory.

8. A reductionist physical theory considers that a. the parts of the system determine the properties of the system through their interaction. b. the parts of the system have no influence on the properties of the system as a whole. c. the parts of the system do not completely determine all the properties of the system. d. the parts of the system are the reason that the system exists.

9. In science, facts a. are absolute. b. may change. c. mean very little. d. are more important than theories.

10. If a physical theory fails to work in a new situation although it worked well before, a. the theory is invalid in the new situation. b. the theory is totally invalid. c. the theory is still valid in the old situations. d. the theory is no longer valid in the old situations. e. both a and c. Physics 1, Quiz #2

1. Which one of the following is not a compound?

a. Air b. Ammonia c. Diamond d. Salt e. All are compounds.

2. A neutron is

a. an elementary particle. b. a lepton. c. composed of quarks d. all of these. e. none of these.

3. Which is the weakest elementary force

a. the electro-magnetic. b. the strong. c. the gravitational. d. the weak.

4. Which force of nature holds neutrons and protons together?

a. gravity b. weak force c. glue d. strong force e. electro-magnetic

5. There is in principle no limit to the shortness of distance that we can measure according to present day theory

a. True b. False 6. Solid matter is mostly empty space. The reason solids don’t fall through one another is because

a. atoms are constantly vibrating even at absolute zero. b. of nuclear forces. c. of gravitational forces. d. of electrical forces. e. of none of these.

7. The unusual thing about quarks is their

a. mass. b. structure. c. energy. d. charge. e. none of these.

8. We can observe macroscopic material objects with

a. photons. b. electrons. c. neutrons. d. protons. e. all of the above.

9. The weight of matter comes mostly from its

a. protons. b. neutrons c. electrons d. both (a) and (c) e. both (a) and (b)

10. When is a process, object, event, or property an element of physical reality?

a. When somebody tells you about it. b. When somebody describes it. c. When its properties are described. d. When a scientific measuring or observing process exists to obtain information about it. e. When people believe it exist Physics 1 ---Quiz #3

1. If a gram of antimatter meets a gram of its corresponding matter, the amount of mass to survive is

a. 1 gram. b. 0 grams. c. 2 grams.

2. The columns of the periodic table of the elements primarily are based on

a. boiling points of the elements. b. chemical properties of the elements. c. atomic mass of the elements. d. number of electrons in the outer shells of the atoms of the elements. e. both b and d

3. Living systems try to

a. minimize their potential energy without constraint. b. maximize their disorder without constraint. c. maintain order at the cost of potential energy. d. maximize their potential energy. e. all of the above.

4. If two substances such as oil and water are allowed to mix together for long enough, they reach a state of

a. maximum disorder. b. minimum potential energy. c. statistical equilibrium. d. none of the above. e. do all of the above.

5. At this moment it is likely that your body

a. contains atoms of people who have died. b. does not contain any atoms of people who have died. c. contains no atoms at all. d. contains only molecules containing carbon. 6. The reason no more than one electron can be at the same place at the same time is

a. that electrons are fermions. b. that they have mass. c. the Pauli exclusion principle. d. self-evident. e. both a and c.

7. Atoms form molecules because of

a. electromagnetic attraction between electrons. b. sharing electrons to form closed subshells. c. electromagnetic attraction between electrons and protons. d. all of the above.

8. The principle of indistinguishability states that

a. identical fermions cannot be at the same place at the same time. b. identical bosons cannot be at the same place at the same time. c. microscopic particles within groups of identical microscopic particles do not have individual identities. d. electrons are fermions. e. electrons will form subshells around nuclei.

9. If one neutron is added to a helium nucleus the result is

a. hydrogen. b. lithium. c. boron. d. helium. e. beryllium.

10. The 1s and 2s subshells are regions of space around the nucleus of a stable helium atom that

a. are filled. b. are always occupied by electrons. c. have electrons only in the 1s subshell. d. form the K shell. e. are electron configurations.