Physics Chp 1 Review

General Qs

100

the branch of science that studies the the nature of matter and energy and how they interact

What is physics?

200

True/False 

One rule of sig fig states: All zeros on the right hand side of the decimal or at the end of the value are significant

False : All zeros on the right hand side of the decimal and at the end of the value are significant

300

True/False: Quantitative observations are often more useful than qualitative observations.

True

400

 a scientist's proposed explanation of a phenomenon which still must be tested.

what is hypothesis

500

Steps of the scientific method

1. Identify/state the problem  2. Gather data  3. Form a hypothesis  4. Test the hypothesis (experiment)  5.  Analyze data   6. Draw conclusions

Scientific Notation & Conversions

100

Express 13,700,000,000 in scientific notation.

13.7 * 10¹⁰

200

Convert the following measurements to meters: 

0.023 mm

2.3*10^-5 m

300

Convert the following measurements to meters:   

 21 km   

2.1* 10⁴ m

400

Convert the following measurements to meters:   

 42.3 cm

0.423 m

500

Convert 100km/hr to m/s 

30 m/s

Sig figs

100

How many sig figs 33.00000

7 

200

how many sig figs 0.003003

 has 4 significant figures.

300

19.85 − 0.0113

19.84 ( 4 sig figs)

400

910 × 0.18945

170 (2 sig figs)

500

Write a four-digit number that has one zero that is not significant and one zero that is significant

sample answer: 1020; the first zero is significant, but the second zero is not significant