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CPS ADV. - McQuaid > Unit 2 Review > Flashcards

Unit 2 Review Flashcards

1
Q

Provide the definition of the term:

standard

A

an exact quantity that people agree to use to compare measurements

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2
Q

Fill in the blanks:

All ____ standards are universally accepted and understood by ____________ throughout the world.

A

SI, scientists

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3
Q

Fill in the chart:

A
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4
Q

After being provided the definition, name the term:

A ratio that is equal to one and is used to change one unit to another.

A

conversion factor

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5
Q

Provide the definition of the term:

mass

A

a measurement of the quantity of matter in an object

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6
Q

Provide the definition of the term:

volume

A

the amount of space occupied by an object

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7
Q

How do you find the volume of a solid rectangle?

A

Measure its length, width, and height and multiply the three numbers

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8
Q

Provide the definition of the term:

density

A

the mass per unit volume of a material

D = M/V

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9
Q

How many SI base units are there?

A

7

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10
Q

After being provided the definition, name the term:

a unit obtained by combining different SI units

A

derived unit

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11
Q

The following units are examples of what?

  • Density: g/cm3
  • Velocity: m/s
  • Acceleration: m/s2
  • Momentum: kg*m/s
  • Weight: kg*m/s2 (also known as the Newton or N)
  • Energy: N*m (also known as the Joule or J)
  • Power: J/s or N*m/s (also known as the Watt or W)
A

Derived units

Most derived units look different from regular SI units, so you should be able to tell them apart

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12
Q

Complete the statement with the best available option:

For most scientific work, temperature is measured on the… scale.

A. Kelvin
B. Farenheight
C. Celsius
D. Ketanji Brown Jackson

A

C. Celsius

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13
Q
  1. What is the freezing point of water in Celcius?
  2. What is the boiling point?
A
  1. 0°C
  2. 100°C
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14
Q

What is the SI unit of temperature?

A

Kelvin (K)

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15
Q

What is the coldest possible temperature?

Hint: Use Kelvin scale

A

0 K

0 K is also known as absolute zero

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16
Q

True or false? If false, correct the statement:

Absolute zero is equal to -173°C.

A

False. Absolute zero is equal to -273°C.

17
Q

Provide the definition of the term:

graph

A

a visual display of information or data

18
Q

Complete the statement with the best available option:

Time is usually the … variable

A. dependent (Y-axis)
B. independent (X-axis)
C. constant
D. None of the above

A

B. independent (X-axis)

19
Q

Fill in the blank:

________ make it easier to understand complex patterns by displaying data in a visual matter.

A

Graphs

20
Q

Most scientific graphs are made as what?

A

Line graphs

21
Q

Answer the question with the best available option:

The lines on scientific graphs are usually drawn in what two ways?

A. bouncy, pointy
B. wiggly, scientifically
C. boldy, italicized
D. straight, curved

A

D. straight, curved

22
Q

True or false? If false, correct the statement:

The x-axis is the horizontal line, and the y-axis is the vertical line.

A

True

Horizontal: ———

Vertical: |

23
Q

The X-axis information should be on which side of the data table?

A

Left

24
Q

How do you find the scale of a graph?

A

divide the range of the data by the number of squares available and round to the nearest common number

25
Q

Why is numbering and labeling each axis important?

A

It tells what the lines on your graph represent

26
Q

How do you form a title for a graph?

A

Y axis (dependent variable) compared to the X axis (independent variable)

Ex.) plant height vs. amount of light

27
Q

Is the graph below directly proportional or inversely proportional?

A

Inversely Proportional

Inversely Proportional - As the independent variable increases, the dependent variable decreases

28
Q

Is the graph below directly proportional or inversely proportional?

A

Directly Proportional

Directly Proportional - As the independent variable increases, the dependent variable increases as well

29
Q

What is one of the most valuable uses for graphs?

A

To “predict” data that is not measured on the graph

30
Q

Fill in the blanks:

When ______ is the independent variable, the lines of a graph can tell you the ______ something happens or changes.

A

time, rate

31
Q

Answer the question with the best available option:

Why is the International System of Units important?

A. It helps to promote good relations among countries of the world
B. It is based on the number 10 and is used by most scientists
C. It is easy to use, and scientists can keep data confidential with it
D. It is used only by countries competing for scientific knowledge

A

B. It is based on the number 10 and is used by most scientists

32
Q

Answer the question with the best available option:

What tool might somebody use to measure precise amounts of liquid volume?

A. ruler
B. scale
C. gradulated cylinder
D. beaker

A

C. graduated cylinder

33
Q

Provide the definition of the term:

time

A

the interval between two events

34
Q

If a substance has a mass of 3.89g and a volume of 2.87mL, what is the density of the substance?

A

~ 1.36 g/mL

35
Q

What would be a proper title for the graph below?

A

mobile phone sales vs. year

36
Q

True or false? If false, correct the statement:

If an object has less density than a liquid, then it will float in that liquid.

A

True

37
Q

What is the base unit for volume?

A

the cubic meter (m3)

The base unit for volume in the International System of Units is derived from the unit of length. For practical purposes, smaller units like liters (L) are often used.

38
Q

Test Short Answer Model Question:

A metal box has a mass of 500 grams. The box has the following dimensions: a length of 10 cm, a width of 5 cm, and a height of 4 cm.

Determine the density of the metal.

A

2.5 g/cm3

CPS ADV. - McQuaid (4 decks)

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