Chapter 1 - Physics

The equation F = ma represents Newton's Second a. Law b. Hypothesis. c. Theory d. Conclusion

a. Law

The Greek Letter △ (delta) indicates a (n) a. difference or change b. sum or total c. direct proportion d. inverse proportion

a. difference or change

Where do you record the data for your lab: a. in a data table b. on a graph c. in your head d. on a piece of scratch paper

a. in a data table

In the steps of the scientific method, what is the nest step after formulating and objectively testing hypotheses? a.interpreting results b.stating conclusions c. conducting experiments d. making observations and collecting data.

a. interpreting results

A lack of precision in scientific measurements typically arises from: a. limitations of the measuring instrument. b. human error c. lack of calibration d.too many significant figures

a. limitations of the measuring instrument

estimate the order of magnitude of the length of a football field. a. 10^-1 m b. 10^2 m c. 10^4m d. 10^6m

b. 10^2m

according to the scientific method, what is the next step after formulating and objectively test hypothesis? a. by defending an opinion b. by experiments c. by interpreting graphs d. by stating conclusions

b. by experiments

A weather balloon records the temperature every hour. From the table above, the temperature: a. increases b. decreases c. remains constant d. decreases and then increases.

b. decreases

which of the following is an area of physics that studies motion and its causes? a. thermodynamics b. mechanics c. quantum mechanics d. optics

b. mechanics

The symbol mm represents a a. micrometer b. millimeter c. megameter d. manometer

b. millimeter

Three values were obtained for the mass of a metal bar: 8.83 g, 8.84 g, 8.82 g. The known mass is 10.68 g The values are: a. accurate b. precise c. both accurate and precise d. neither accurate nor precise

b. precise

A Baker makes a loaf of bread. Identify the area of physics that this involves. a. optics b. thermodynamics c. mechanics d. relativity

b. thermodynamics

According to the scientific method, why does a physicist make observations and collect data? a. to decide which parts of a problem are important b. to ask a question c. to make an interpretation d. to solve all problems

b. to ask a question

The time required to make a trip of 100.0 km is measured at various speeds. From the graph above, what speed will allow the trip to be made in 2 hours? a. 20.0 km/h b. 40.0 km/h c. 50.0 km/h d. 90.0 km/h

c.

10 cm is __________m a. 10 b. 1,000 c. 0.10 d. 0.001

c. 0.10

A book has a mass of approximately a. 1 g b. 100 g c. 1 kg d. 100 kg

c. 1 kg

A hiker uses a compass to navigate through the woods. Identify the area of physics that this involves. a. thermodynamics b. relativity c. electromagnetism d. quantum mechanics

c. electromagnetism

The variable that goes on the x axis when making a graph line is: a. control b. dependent c. independent d. measurement

c. independent

The SI base unit used to measure mass is the: a. meter b. second c. kilogram d. liter

c. kilogram

The SI unit for mass is a. gram b. pound c. kilogram d. newton

c. kilogram

What two dimensions, in addition to mass, are commonly used by physicists to derive additional measurements. a. length and width b. area and mass c. length and time. d. velocity and time

c. length and time

Diagrams are NOT designed to: a. show relationships between concepts. b. show setups of experiments c. measure an event or situation d. label parts of a model

c. measure and event or situation

The most appropriate SI unit for measuring length of an automobile is the: a. micron b. kilometer c. meter d. nanometer

c. meter

Why do Physicists use models? a. to explain the complex features of simple phenomena. b. to describe all aspects of phenomenon c. to explain the basic features of complex phenomena d. to describe all of reality

c. to explain the basic features of complex phenomena

Listening to your favorite radio station involved which area of physics? a. optics b. thermodynamics c. vibrations and wave phenomena d. relativity

c. vibrations and wave phenomena

The SI base unit for time is: a. 1 day b. 1 hour c. 1 minute d. 1 second

d. 1 second

How does a scientist reduce the frequency of human error and minimize a lack of accuracy? a. take repeated measurements. b. Use the same method of measurement c. maintain instruments in good working order. d. all of the above

d. all of the above

Which statement about models is not correct? a. models describe only part of reality. b. models help build hypothesis. c. models help guide experimental design. d. models manipulate a single variable or factor in an experiment.

d. models manipulate a single variable or factor in an experiment.

If data were graphed and the following curve was found, you would say that the two variables are a. directly proportional b. inversely proportional c. proportional to the square d. proportional to the square root.

d. proportional to the square

The abbreviation for micrometer is: a. mm b. m c.Mn d.µm

d. µm

True or False: A nanometer is something you can see with your naked eye.

False

How many times larger is a gigabyte than a megabyte: a. 10 b. 1,000 c. 1 million d. 1 billion

B. 1,000