Physics Unit 1

Question 0

G

Answer 0

Giga, 1X10^9

Question 1

T

Answer 1

Tetra, 1X10^12

Question 2

M

Answer 2

Mega, 1X10^6

Question 3

k

Answer 3

Kilo, 1X10^3

Question 4

h

Answer 4

Hecto, 1X10^2

Question 5

c

Answer 5

Centi, 1X10^-2

Question 6

m

Answer 6

Milli, 1X10^-3

Question 7

ū

Answer 7

Micro, 1X10^-6

Question 8

n

Answer 8

Nano, 1X10^-9

Question 9

p

Answer 9

Pico, 1X10^-12

Question 10

Study of natural phenomena

Answer 10

Science

Question 11

Amount of material in a given space

Answer 11

Density

Question 12

Application of the laws of science

Answer 12

Engineering

Question 13

An early explanation of an observed event based on preliminary research

Answer 13

Hypothesis

Question 14

A generally accepted explanation for a phenomena based on extensive research

Answer 14

Theory

Question 15

A broad explanation for related natural phenomena

Answer 15

Law

Question 16

The measure of the amount of material in an object

Answer 16

Mass

Question 17

Anything that has mass and takes up space

Answer 17

Matter

Question 18

Property of matter that states an object will continue in its current state of motion

Answer 18

Inertia

Question 19

Name the 3 Base units

Answer 19

Meter, Gram, Liter

Question 20

Define sig figs and name the 5 rules

Answer 20

Indicates accuracy of the measurement.

1. All non zeros are sig
2. All zeros between non zeros are sig
3. Zeros on the end of a decimal are sig
4. Zeros on the end of a whole number are NOT sig
5. Zeros at beginning of decimal are NOT sig

Question 21

Density is equal to…

Answer 21

Mass (or weight) divided by volume

Question 22

Define force and give the formula

Answer 22

Created by acceleration; F=ma

Question 23

Give formula if weight is a force

Answer 23

Fw=mass X acceleration of gravity

Question 24

Acceleration of gravity is equal to…

Answer 24

9.8 m/s^2

Question 25

Mathematical basis for metric system? Official name?

Answer 25

Base 10; Standard International

Question 26

Why is SI the system used in science?

Answer 26

Base 10, easy conversions

Question 27

Most recent definition of a standard meter?

Answer 27

Distance light travels in a vacuum over a certain amount of time

Question 28

Only fundamental quantity measured by comparison of a physical object? Why?

Answer 28

Kilogram, still the most accurate

Question 29

Original standard of a second? Updated standard?

Answer 29

1/86400 of a day; # of vibrations of cesium -133 atom

Question 30

SI includes what standards?

Answer 30

Same as metric but uses Kelvin for temp.

Question 31

Metric system uses what standards?

Answer 31

Has a decimal basis (base 10)

Temp is measured in Celsius

Question 32

Name the seven fundamental Units

Answer 32

1. Length - meters
2. Mass - kilogram
3. Time - second
4. Temp. - kelvin
5. Electric current - Ampere
6. Amount of substance - mole
7. Luminous intensity - Candela

Question 33

Accuracy

Answer 33

Closeness of a measurement to actual value

Question 34

Precision

Answer 34

Ability to repeat measurement with “same” result

Question 35

Specific Gravity is the

Answer 35

Density of an object divided by density of water

Question 36

Density of water is equal to

Answer 36

1 g/cm^3

Question 37

1 dm^3 is equal to what?

Answer 37

1 Liter

Question 38

1 Liter is equal to what?

Answer 38

1000 mL

Question 39

1 cm^3 is equal to?

Answer 39

1 mL

Question 40

Weight and is a force created by what?

Answer 40

Gravity

Question 41

What is the SI unit for force or weight?

Answer 41

Newton

Question 42

What is the formula for weight?

Answer 42

Mass (kg) X 9.8 m/s^2