DOMAIN 1: MATHEMATICS AND CALCULATIONS

Question 1

Dimension

Answer 1

A property that can be measured. (IE: Mass, Length, Time, etc…) or that can be calculated by multiplying or dividing other dimensions, such as distance/time = Velocity or Distance/second² = Acceleration

Question 2

A measured or counted quantity has both a …

Answer 2

Numerical Value and a Unit

Question 3

The numerical value of two quantities can be ADDED or SUBTRACTED only …

Answer 3

if the units are the same. 1 pound + 3 pounds = 4 pounds

Question 4

Force x Distance =

Answer 4

Torque

Example: 3ft. 2lb. (force) = 6ft. lb. (torque)

Question 5

Length ÷ Time =

Answer 5

Velocity

Example: 5cm/5sec. = 1 cm/sec. (velocity)

Question 6

Order of Operations

Answer 6

From Left to Right:

1. Remove parentheses
2. Calculate exponents
3. Perform multiplications or divisions
4. Perform additions or subtractions

Question 7

Density is…

Answer 7

The mass of a substance contained in one unit of its volume.

Question 8

Specific Gravity (s.g.) is…

Answer 8

The ratio of the mass of the liquid or solid to the mass of an equal volume of water.

Question 9

Diameter

Answer 9

Any straight line segment that passes through the center of a circle from one side to the other.

Question 10

Circumference

Answer 10

The distance around a circle.

Question 11

Radius

Answer 11

The distance to the center of a circle.

Question 12

What is the density of water

Answer 12

62.4 Lbs per cubic feet

Question 13

s.g. > 1 =

Answer 13

heavier (more dense) than water

Question 14

s.g. < 1 =

Answer 14

Lighter (less dense) than water

Question 15

Rankine scale

Answer 15

A thermodynamic temperature scale based on an absolute scale (ie: a scale that begins at Absolute Zero)

Rankine converts to Fahrenheit

Question 16

Absolute Zero

Answer 16

Is the lower limit of the thermodynamic temperature scale, a state at which the enthalpy and entropy of a cooled ideal gas reaches its minimum value, taken as 0.

Question 17

Kelvin scale

Answer 17

Is an absolute thermodynamic temperature scale using as its null point absolute zero, the temperature at which all thermal motion ceases in the classical description of thermodynamics.

Kelvin converts to Celsius

K = °C + 273.15

Question 18

℃ to °F conversion

Answer 18

°C Multiply by 9, then divide by 5, then add 32

Question 19

°F to °C conversion

Answer 19

°F Deduct 32, then multiply by 5, then divide by 9

Question 20

°R from °F

Answer 20

°R = °F + 460

Question 21

K from °C

Answer 21

K = °C + 273.15

Question 22

Atomic Structure

Answer 22

Nucleus = equal number of + Protons and Neutral Neutrons

• Electrons orbit the nucleus

Question 23

Isotopes

Answer 23

Atoms of the same matter that have the same atomic number but different atomic mass (IE: the number of protons are equal but the number of neutrons are different)

Question 24

Atomic Number

Answer 24

The number of protons in a Nucleus

Question 25

Atomic Mass

Answer 25

The number of protons and neutrons in a

Question 26

Molecular Weight

Answer 26

The sum of atomic weight of different atoms making a compound.

(IE: H2O = H is 1 and O is 16
1X1 + 16 = 18)