## Key Terms from Glossary

##### Introduction to Glossary
• The glossary activity module allows participants to create and maintain a list of definitions.
• The auto-linking feature will highlight any word in the course which is located in the glossary.
• Student can post their comment on each Key-Term from glossary.
##### Completion Information
• For successful completion of glossary activity, student must carefully browse it
##### Video Tutorial

Browse the glossary using this index

Special | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | ALL

### A

Question:

#### accuracy

(Last edited: Wednesday, 19 June 2019, 8:25 AM)

the degree to which a measured value agrees with correct value for that measurement

Question:

#### approximation

(Last edited: Wednesday, 19 June 2019, 8:25 AM)

an estimated value based on prior experience and reasoning

### C

Question:

#### classical physics

(Last edited: Wednesday, 19 June 2019, 8:26 AM)

physics that was developed from the Renaissance to the end of the 19th century

Question:

#### conversion factor

(Last edited: Wednesday, 19 June 2019, 8:26 AM)

a ratio expressing how many of one unit are equal to another unit

### D

Question:

#### derived units

(Last edited: Wednesday, 19 June 2019, 8:27 AM)

units that can be calculated using algebraic combinations of the fundamental units

### E

Question:

#### English units

(Last edited: Wednesday, 19 June 2019, 8:27 AM)

system of measurement used in the United States; includes units of measurement such as feet, gallons, and pounds

### F

Question:

#### fundamental units

(Last edited: Wednesday, 19 June 2019, 8:28 AM)

units that can only be expressed relative to the procedure used to measure them

### K

Question:

#### kilogram

(Last edited: Wednesday, 19 June 2019, 8:28 AM)

the SI unit for mass, abbreviated (kg)

### L

Question:

#### law

(Last edited: Wednesday, 19 June 2019, 8:29 AM)

a description, using concise language or a mathematical formula, a generalized pattern in nature that is supported by scientific evidence and repeated experiments

### M

Question:

#### meter

(Last edited: Wednesday, 19 June 2019, 8:29 AM)

the SI unit for length, abbreviated (m)

Question:

(Last edited: Wednesday, 19 June 2019, 8:30 AM)

the percent uncertainty in a quantity calculated by multiplication or division is the sum of the percent uncertainties in the items used to make the calculation

Question:

#### metric system

(Last edited: Wednesday, 19 June 2019, 8:30 AM)

a system in which values can be calculated in factors of 10

Question:

#### model

(Last edited: Wednesday, 19 June 2019, 8:31 AM)

representation of something that is often too difficult (or impossible) to display directly

Question:

#### modern physics

(Last edited: Wednesday, 19 June 2019, 8:31 AM)

the study of relativity, quantum mechanics, or both

### O

Question:

#### order of magnitude

(Last edited: Wednesday, 19 June 2019, 8:31 AM)

refers to the size of a quantity as it relates to a power of 10

### P

Question:

#### percent uncertainty

(Last edited: Wednesday, 19 June 2019, 8:32 AM)

the ratio of the uncertainty of a measurement to the measured value, expressed as a percentage

Question:

#### physical quantity

(Last edited: Wednesday, 19 June 2019, 8:33 AM)

a characteristic or property of an object that can be measured or calculated from other measurements

Question:

#### physics

(Last edited: Wednesday, 19 June 2019, 8:33 AM)

the science concerned with describing the interactions of energy, matter, space, and time; it is especially interested in what fundamental mechanisms underlie every phenomenon

Question:

#### precision

(Last edited: Wednesday, 19 June 2019, 8:34 AM)

the degree to which repeated measurements agree with each other

### Q

Question:

#### quantum mechanics

(Last edited: Wednesday, 19 June 2019, 8:34 AM)

the study of objects smaller than can be seen with a microscope

### R

Question:

#### relativity

(Last edited: Wednesday, 19 June 2019, 8:34 AM)

the study of objects moving at speeds greater than about 1% of the speed of light, or of objects being affected by a strong gravitational field

### S

Question:

#### scientific method

(Last edited: Wednesday, 19 June 2019, 8:35 AM)

a method that typically begins with an observation and question that the scientist will research; next, the scientist typically performs some research about the topic and then devises a hypothesis; then, the scientist will test the hypothesis by performing an experiment; finally, the scientist analyzes the results of the experiment and draws a conclusion

Question:

#### second

(Last edited: Wednesday, 19 June 2019, 8:35 AM)

the SI unit for time, abbreviated (s)

Question:

#### SI units

(Last edited: Wednesday, 19 June 2019, 8:35 AM)

the international system of units that scientists in most countries have agreed to use; includes units such as meters, liters, and grams

Question:

#### significant figures

(Last edited: Wednesday, 19 June 2019, 8:36 AM)

express the precision of a measuring tool used to measure a value

### T

Question:

#### theory

(Last edited: Wednesday, 19 June 2019, 8:36 AM)

an explanation for patterns in nature that is supported by scientific evidence and verified multiple times by various groups of researchers

### U

Question:

#### uncertainty

(Last edited: Wednesday, 19 June 2019, 8:36 AM)