Chapter 1 Physics Bockrath

Vocabulary

100

According to the scientific method, what happens after a physicist tests their hypothesis and collects/analyzes data?

Conclusion

200

What type of data do we want to collect in physics?

quantitative or qualitative 

Quantitative

300

Which requires more evidence: theory or scientific law

law

400

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 (accurate or precise)

What is "precise"

500

hitting the bullseye on a dartboard is  (accuracy or precision)

accuracy

Misc

100

Measurements can be classified as precise, but not accurate.

T or F

True

200

Variable the scientist introduces and is placed on the x-axis in graphs

What is the independent variable

300

2.3x10⁴ x 6.5x10⁷ =

make sure answer is in correct sci notation with correct sig fig

1.5x10¹²

400

If a space shuttle can travel 17,000 miles per hour, how many meters per second does it travel?

(1 mile = 1.609 km)

correct sig fig

7.6 x 10³ m/s

500

1,234,000. has how many sig figs?

7

Areas of Physics

100

What is the area of physics that studies motion and its causes? 

a. mechanics                      b. thermodynamics 

c. quantum mechanics        d. waves

What is "mechanics."

200

A physicist is studying specifically the speed of neutrons during a nuclear reaction. Identify the area of physics that this involves.

a. quantum physics        b. relativity 

c. thermodynamics        d. mechanics

 What is b. relativity

300

What is the area of physics that deals with microscopic/submicroscopic particles?

a.) relativity

b.) optics

c.) quantum mechanics

d.) waves

Quantum mechanics

400

The area of physics involved in testing the effects of extreme heat and cold on an alloy.

What is "thermodynamics"

500

The area of physics involved in testing whether the alloy can affect a magnetic compass needle. 

a. thermodynamics 

b. relativity 

c. optics 

d. electromagnetism

What is "electromagnetism."

Significant Figures

100

The radius of Earth is 6 370 000 m. How many significant figures does this number have?

3

200

Calculate the following, and express the answer in scientific notation with the correct number of significant figures: 10.5 x 8.8 x 3.14

What is "2.9 x 10^2"

300

Calculate the following, and express the answer in scientific notation with the correct number of significant figures: (0.82 + 0.042)(4.4 x 10^3)

What is "3.8 x 10^3"

400

How many significant figures does 0.050200 mg have?

What is "5"

500

The speed of light is known to be 2.99792458 x 10^8 m/s. Express this value with 3 significant figures.

What is "3.00 x 10^8"

Conversions

100

What is 5 hours 45. min expressed in seconds?

put answer in scientific notation 

don't worry about sig figs

2.07 x 10⁴ seconds

200

What is 47 g expressed in micrograms?

put answer in scientific notation

4.7 X 10⁷ 

300

What is 15.1 m/s expressed in kilometer per hour?

54.36 km/hr = 54.4 km/hr

400

The radius of Earth is 6 370 000 m. Express this measurement in km in scientific notation with the correct number of significant digits.

What is "6.37 x 10^3 km"

500

If the change in position (distance) x (with units of m) is related to velocity v (with units of m/s) in the equation x = Av, the constant A has which dimension?

What is "second"