Physics Unit 1

Question 1

The fact that the results are iterative prompts the physicist to propose a(n) ___ or a tested idea that seems to explain his observations.

Answer 1

Theory

Question 2

The physicist conducts a(n) ___, or a series of tests to prove or disprove the possible explanation she has published.

Answer 2

experiment

Question 3

The number 0.0725 has ___ significant figures.

Answer 3

3

Question 4

kilometers

Answer 4

one thousand meters

Question 5

milligram

Answer 5

one thousandth of a gram

Question 6

nanosecond

Answer 6

one billionth of a second

Question 7

A young girl tells her father that she is interested in natural things; in return, he says, “Maybe you should study ___.”

Answer 7

Physics

Question 8

The importance of experimentation was stressed first by ___.

Answer 8

Galileo Galilei

Question 9

In the number 5,000, the zeros are ___.

Answer 9

not significant

Question 10

The first Periodic Table was created by ___.

Answer 10

Dmitri Mendeleev

Question 11

In the number 76.150, the zero is ___.

Answer 11

significant

Question 12

A person sees with her eyes that an asteroid is approaching the earth at a certain angle. This is a(n) ____.

Answer 12

observation

Question 13

If you say that 2.2 pounds is ___ to 1 kg in quantity, you are saying that 2.2 pounds are the same as 1 kg.

Answer 13

equivalent

Question 14

Much of the quantitative data is written in the language of science or ___.

Answer 14

mathematics

Question 15

After repeating many experiments, the physicist finds the results to be ___ or occurring over and over.

Answer 15

iterative

Question 16

In a physics experiment, you measure time, mass, temperature, and electrical current. The SI units you would express your data in the correct order are:

Answer 16

seconds, grams, kelvin, amperes

Question 17

While conducting numerous experiments, you gather ___ data or data that is measurable in quantity.

Answer 17

quantative

Question 18

By definition a baseball is a sphere formed by yarn wound around a small core of cork, rubber or similar material, covered with two stripes of white horsehide or cowhide tightly stretched together. If you know that a baseball’s mass is 140g and its volume is 200 cm3, you may find its ___.

Answer 18

density

Question 19

All ___ numbers are significant.

Answer 19

non zero

Question 20

You have the number 0.045. The zero after the decimal is ___.

Answer 20

non significant

Question 21

The amazing man who invented calculus, promoted the scientific method, created the three laws of motion, and also came up with important laws about gravity and planetary motion was ___.

Answer 21

Sir Isaac Newton

Question 22

A man who is the forefront of creating the field of chemistry was ___.

Answer 22

Robert Boyle

Question 23

Part of the theory is a mathematical equation which is a(n) ___, or a simple, factual, and precise statement that describes an action or set of actions that has always been observed to be true.

Answer 23

scientific law

Question 24

During your physics lab, you drop an electrical wire in a beaker containing water. You should ___.

Answer 24

inform your supervisor and other students to not touch the wire or the water

Question 25

What are the 6 steps of the scientific method?

Answer 25

Observation, Problem Question, Hypotheses, Experimentation, Analyze Data and Draw Conclusions, Report

Question 26

Because the physicist used her five senses, the data that she collected is ___.

Answer 26

qualitative

Question 27

The physicist creates a(n) ___, or possible explanation to the phenomenon she has observed.

Answer 27

hypothesis

Question 28

You are informed by your physics teacher that you will be performing an experiment involving electricity. Among the lab equipment you might use would be ___.

Answer 28

batteries, resistors, and electroscope

Question 29

You are told that a hydrofoil, a boat that actually travels above the water, moves 83 km in 75 minutes. This information can help you figure out the derived unit for ___.

Answer 29

speed