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Quiz #2 - Properties & Changes of Matter, Separation Techniques

Total questions: 175

Worksheet time: 12hrs 2mins

Name
Class
Date
1.

Rank the objects from MOST dense to LEAST dense.

a)

left, center, right

b)

right, center, left

c)

left, right, center

d)

right, left, center

e)

center, left, right

2.

Put the liquids in order from most dense to least dense?

a)

4, 3, 2, 1

b)

1, 2, 3, 4

c)

3, 4, 2, 1, 

d)

4, 3, 1, 2

3.

What is the formula for density?

a)

density = mass x volume

b)

density = mass / volume

c)

density = mass + volume

d)

density = mass - volume

4.

Jack has a rock. The rock has a mass of 14g and a volume of 2cm3. What is the density of the rock?

a)

7 mL

b)

7 g/cm3

c)

28 g/cm3

d)

1/7 g/cm3

5.

What is the density of a substance if its mass is 20g and the volume is 5mL?

a)

4g

b)

2.5g

c)

4g/mL

d)

2.5mL

6.

The density of a substance is 2.6 g/mL. If you cut it and half, what is the density of one of the halves?

a)

the same

b)

1.3g/mL

c)

5.2g/mL

d)

None of the above is correct

7.

The volume of a substance that floats in water will have a greater volume than mass.

a)

True

b)

False

8.

An object floats in liquids with a density of 2 g/ml, 1.5 g/mL and 1.0 g/mL. It sinks in a liquid with a density 0.5 g/mL. What could be an estimate of it's density.

a)

3.8 g/mL

b)

1.5 g/mL

c)

.75 g/mL

d)

2.2 g/mL

9.

A graduated cylinder has a mass of 80.0 g when empty. When 20.0 mL of water is added, the graduated cylinder has a mass of 100 g. If a stone is added to the graduated cylinder, the water level rises to 45.0 mL and the total mass is now 156 g. What is the density of the stone? 

a)

2.24 g/mL

b)

3.5 g/mL

c)

2 g/mL

d)

2.22 g/mL

10.

A. gasoline 0.7 g/ cm3  B. lead 11.3 g/ cm3  C. mercury 13.6 g/ cm3  D. Paraffin(wax) 0.87 g/ cm3  E. platinum 21.4 g/ cm3 

Which substance(s) above will not sink in water?

a)

A & B

b)

C & E

c)

B & C

d)

A & D

11.

True or False:  The density of a specific type of material never changes.  

a)

True

b)

False

12.

Frank has a paper clip. It has a mass of 9g and a volume of 3cm3. What is its density?

a)

3 g/cm3

b)

1/3 g/cm3

c)

27 g/cm3

d)

39 g/cm3

13.

Frank has an eraser. It has a mass of 4g, and a volume of 2cm3. What is its density?

a)

8 g/cm3

b)

2 g/cm3

c)

1/2 g/cm3

d)

24 g/cm3

14.

Put the liquids in order from most dense to least dense?

a)

4, 3, 2, 1

b)

1, 2, 3, 4

c)

3, 4, 2, 1, 

d)

4, 3, 1, 2

15.

An object with which of the following densities will float on water?

a)

0.7 g/cm3

b)

1.2 g/cm3

c)

3.5 g/cm3

d)

11.4 g/cm3

16.

Helium balloons rise on earth because

a)

helium is less dense than air

b)

helium is more dense than air

c)

helium is cooler than air

d)

helium is warmer than air

17.

A student knows the mass of an object. What other variable does the student need to know to calculate the object's density?

a)

Color

b)

Weight

c)

Volume

d)

Length

18.

Which measurement would be the most useful for identifying an unknown liquid?

a)

Weight

b)

volume

c)

mass

d)

density

19.

Jack has a rock. The rock has a mass of 14g and a volume of 2cm3. What is the density of the rock?

a)

7 mL

b)

7 g/cm3

c)

28 g/cm3

d)

1/7 g/cm3

20.

The tool used to measure the mass of a substance or object is a ______________.

a)

balance

b)

graduated cylinder

c)

ruler

d)

thermometer

21.

Which lab tool might you use to measure the volume of a liquid?

a)

electric scale

b)

bunsen burner

c)

test tube

d)

graduated cylinder

22.

What is the volume of Object X?

a)

10.0 mL

b)

15.0 mL

c)

20.0 mL

d)

25.0 mL

23.

What is the volume of 150 grams of lead if it has a density of 11.3 g/cm3?

a)

13.3 g

b)

13.3 cm3

c)

.075 g

d)

1695 cm3

24.

An empty beaker has a mass of 60 grams.  When mercury is added to the beaker, it has a mass of 200 grams. What is the mass of the mercury?

a)

140 grams

b)

200 grams

c)

140 mL

d)

260 g

25.

The density of this material is 2 g/cm3. There are 24 cm3  of this material. Find the total mass of this material.

a)

12 grams

b)

48 grams

c)

12 g/cm3

d)

48 g/cm3

26.

Which box has a higher density?  

a)

Box A

b)

Box B

c)

cannot be determined

d)

they are the same

27.

What is the density of the star?

a)

98 g/mL

b)

5 g/mL

c)

5.0 g/mL

d)

125 g/mL

28.

A. gasoline 0.7 g/ cm3  B. lead 11.3 g/ cm3  C. mercury 13.6 g/ cm3  D. Paraffin(wax) 0.87 g/ cm3  E. platinum 21.4 g/ cm3 

Which substance(s) above will not sink in water?

a)

A & B

b)

C & E

c)

B & C

d)

A & D

29.

A graduated cylinder has a mass of 80.0 g when empty. When 20.0 mL of water is added, the graduated cylinder has a mass of 100 g. If a stone is added to the graduated cylinder, the water level rises to 45.0 mL and the total mass is now 156 g. What is the density of the stone? 

a)

2.24 g/mL

b)

3.5 g/mL

c)

2 g/mL

d)

2.22 g/mL

30.

When you graph the mass (y-axis) vs the volume (x-axis) of a specific pure substance, the slope of the line is:

a)

density

b)

negative

c)

a curved line

d)

a straight line that does not travel through the origin

31.

Physical properties....

a)

change the matter when studied

b)

can be observed and measured without changing the matter being studied

c)

include the ability to burn and rust

d)

are useless unless studied in a lab

32.

Melting point is...

a)

The temperature at which a solid can change to a liquid

b)

The temperature at which a solid can change to a gas

c)

The temperature at which a gas can change to a liquid

d)

The temperature at which a liquid can change to a solid

33.

The boiling point is ...

a)

The temperature at which a liquid changes to a gas

b)

The temperature at which a solid changes to a gas

c)

The temperature at which a gas changes to a solid

d)

The temperature at which a liquid changes to a solid

34.

What word describes the relationship between the mass of a material and its volume?

a)

Volume

b)

Weight

c)

Height

d)

Density

35.

___________ is the ability to conduct electricity.

a)

Reprocity

b)

Conductivity

c)

Density

d)

Sublimation

36.

Substances that do NOT conduct heat and electricity well are called ______________.

a)

Metals

b)

Silver

c)

Conductors

d)

Insulators

37.

Color is a _________________.

a)

Chemical property

b)

Physical property

c)

Absence property

38.

____________ is the relative resistance of a material (usually a metal) to denting, scratching, or bending.

a)

Density

b)

Hardness

c)

Conductivity

d)

Color

39.

If a substance has luster, it is ________

a)

shiny/reflective

b)

weak

c)

dull

d)

easily pulled into a wire

40.

The ability to be hammered into different shapes is __________.

a)

ductility

b)

malleability

c)

density

d)

volume

41.

______________________ can only be recognized when substances react or do not react chemically with one another.

a)

Physical properties

b)

Chemical properties

c)

Flammable properties

d)

Colorful properties

42.

Flammability means the ability to _______ and is a _________ property.

a)

melt; chemical

b)

rust; physical

c)

change; physical

d)

burn; chemical

43.

A rusting bicycle

a)

Physical Change

b)

Chemical Change

44.

Glass breaking

a)

Physical Change

b)

Chemical Change

45.

Is sharpening a pencil a physical or chemical change?

a)

Physical 

b)

Chemical

46.

Is milk going sour a physical or chemical change?

a)

Physical 

b)

Chemical

47.

which one is the definition of chemical property?

a)

a property or characteristic of a substance that is observed during a reaction where the chemical composition of a substance is changed

b)

any change that results in the formation of new chemical substances

c)

combustibility

48.

Physical properties are

a)

properties that can be observed without changing the identity of the substance

b)

properties that describe how a substance changes into a completely different substance

49.

Ability to rust is this type of property:

a)

Physical property

b)

Chemical property

50.

Odor: Chemical or Physical Property

a)

Chemical Property

b)

Physical Property

51.
Boiling Point: Chemical or Physical Property
a)
Chemical Property
b)
Physical Property
52.
Melting Point: Chemical or Physical Property
a)
Chemical Property
b)
Physical Property
53.
Reacts with Acid: Chemical or Physical Property
a)
Chemical Property
b)
Physical Property
54.
Density: Chemical or Physical Property
a)
Chemical Property
b)
Physical Property
55.
Blue Color: Chemical or Physical Property
a)
Chemical Property
b)
Physical Property
56.

Separating sand from gravel

a)

Physical Change

b)

Chemical Change

57.

Freezing chocolate-covered bananas

a)

Physical Change

b)

Chemical Change

58.

Melting butter for popcorn

a)

Physical Change

b)

Chemical Change

59.

Burning toast

a)

Physical Change

b)

Chemical Change

60.

Which of the following techniques can we use to separate homogeneous mixtures?

a)

Crystallisation

b)

Distillation

c)

Evaporation

d)

All of the above

61.

Name the separation technique

a)

Distillation

b)

Crystallisation

c)

Magnetic Separation

d)

Condensation

62.

Name the separation technique

a)

Filtration

b)

Evaporation

c)

Distillation

d)

Separation

63.

Name the separation technique

a)

Distillation

b)

Filtration

c)

Sieving

d)

Crystallisation

64.

One pure substance boils, escapes, condenses, and gets collected as a liquid.

a)

Distillation

b)

Filtration

c)

Decantation

d)

Recrystallization

65.

a)

Distillation

b)

Centrifugation

c)

Filtration

d)

Chromatography

66.

Which separation technique is shown below

a)

filtration

b)

crystallization

c)

sublimation

d)

evaporation

67.
The diagram shows the apparatus for separating soil and water. What are the labelled parts?
a)
A = distillate, B = filtrate
b)
A = filtrate, B = residue
c)
A = residue, B = filtrate
d)
A = residue, B = distillate
68.

A physical blend of two or more components?

a)

product

b)

phase

c)

reactant

d)

mixture

69.

A substance that can be separated into two or more substances only by a chemical change is a(n)_____.

a)

solution

b)

element

c)

mixture

d)

compound

70.

Which of the following is true about homogeneous mixtures?

a)

Known as solutions

b)

Consist of two or more phases

c)

Have compositions that vary

d)

Are always liquid

71.

Which of the following is classified as a mixture?

a)

pure water

b)

pure air

c)

pure nitrogen

d)

pure gold

72.

Which of the following is a heterogeneous mixture?

a)

air

b)

salt water

c)

steel

d)

soil

73.

What is the purpose of chromatography in separation techniques?

a)

To combine the components of a mixture.

b)

To identify the components of a mixture.

c)

To heat the components of a mixture.

d)

To separate and analyze the components of a mixture.

74.

What is the purpose of distillation in separation techniques?

a)

To separate a mixture of liquids based on their different densities.

b)

To separate a mixture of solids based on their different melting points.

c)

To separate a mixture of liquids based on their different boiling points.

d)

To separate a mixture of gases based on their different solubilities.

75.

Which separation technique is used to separate different components of a mixture based on their different affinities to a stationary phase and a mobile phase?

a)

filtration

b)

distillation

c)

chromatography

d)

evaporation

76.

Which separation technique is used to separate a mixture of liquids with different boiling points?

a)

distillation

b)

filtration

c)

evaporation

d)

chromatography

77.

Describes a mixture with a uniform composition.

a)

heterogeneous

b)

compound

c)

homogeneous

d)

chemical reaction

78.

An example of a homogeneous mixture is

a)

distilled water.

b)

oxygen.

c)

noodle soup.

d)

stainless steel.

79.

Which physical property is fractional distillation based on?

a)

Different boiling points

b)

Different melting points

c)

Different solubilities

d)

Different densities

80.

Choose the pair that correctly identifies A and B.

a)

A: Residue,

B: Filterate

b)

A: Solute,

B: Filtrate

c)

A: Residue,

B: Filtrate

d)

A: Solute,

B: Filterate

81.
What is the purpose of distillation?
a)
To separate an insoluble solid from a liquid or solution
b)
To separate a soluble solid from a solvent
c)
To separate a liquid mixture based on boiling points
d)
To separate a heterogeneous mixture of two solids
82.
What is the purpose of filtration?
a)
To separate a liquid mixture based on boiling points
b)
To separate a soluble solid from a solvent
c)
To separate an insoluble solid from a liquid or solution
d)
To separate a heterogeneous mixture of two solids
83.
What determines the separation technique used for a mixture?
a)
The type of mixture
b)
The components of the mixture
c)
Both the type of mixture and the components of the mixture
d)
Neither the type of mixture nor the components of the mixture
84.

In a coffee machine, the ground coffee is separated from the coffee solution by using..

a)

sand paper

b)

filter paper

c)

toilet paper

d)

tissue paper

85.

Lead is an element. What word below describes an element?

a)

pure substance

b)

compound

c)

heterogenous mixture

d)

homogenous mixture

86.

The Matter Classification of Air is

a)

Compound

b)

Element

c)

Pure Substance

d)

Mixture

87.

Salt is an example of which classification of Matter?

a)

Element

b)

Pure Substance

c)

Mixture

d)

Compound

88.

Salt Water is

a)

Mixture

b)

Homogeneous Mixture

c)

Pure Substance

d)

Heterogeneous Mixture

89.

List All That Describe the Matter Classification of Blood.

a)

Solution

b)

Homogeneous Mixture

c)

Heterogeneous Mixture

90.

How would you Classify Sugar?

a)

Pure Substance

b)

Element

c)

Mixture

d)

Compound

91.

What would the Classification of Raisin Bread be?

a)

Compound

b)

Pure Substance

c)

Mixture

d)

Heterogeneous Mixture

92.

Brass is Classified as

a)

Pure Substance

b)

Compound

c)

Mixture

d)

Alloy

93.

The Matter Classification for Iron is

a)

Compound

b)

Element

c)

Pure Substance

d)

Solution

94.

Sand & Water are Classified as

a)

Homogeneous Mixture

b)

Pure Substance

c)

Mixture

d)

Heterogeneous Mixture

95.

Copper is a/an

a)

Element

b)

Pure Substance

96.

How would you classify this image?

a)

homogeneous mixture

b)

heterogeneous mixture

97.

Is the following a pure substance or mixture? Brass (Cu and Zn)

a)

pure substance

b)

mixture

98.

How would you classify this image?

a)

homogeneous mixture

b)

heterogeneous mixture

99.

How would you classify this image?

a)

homogeneous mixture

b)

heterogeneous mixture

100.

Classify the particle diagram.

a)

element

b)

compound

c)

mixture of elements

d)

mixture of compounds

e)

mixture of elements and compounds

101.

Classify the particle diagram.

a)

element

b)

compound

c)

mixture of elements

d)

mixture of compounds

e)

mixture of elements and compounds

102.

Classify the particle diagram.

a)

element

b)

compound

c)

mixture of elements

d)

mixture of compounds

e)

mixture of elements and compounds

103.

Classify the particle diagram.

a)

element

b)

compound

c)

mixture of elements

d)

mixture of compounds

e)

mixture of elements and compounds

104.

Is the following homogeneous or heterogeneous? Fruit salad

a)

homogeneous mixture

b)

heterogeneous mixture

105.

Is the following a homogeneous or heterogeneous mixture? coffee mixed with cream and sugar

a)

homogeneous mixture

b)

heterogeneous mixture

106.

Is the following an element or compound? hydrogen peroxide (H2O2)

a)

element

b)

compound

107.

Is the following an element or compound? A silicon (Si) chip.

a)

element

b)

compound

108.

Is the following a pure substance or mixture? Trimix (oxygen, nitrogen, and helium) found in a scuba tank

a)

pure substance

b)

mixture

109.

Is the following a pure substance or mixture? Baking Soda ( NaHCO3NaHCO_3 ) 

a)

pure substance

b)

mixture

110.
If you change a substance into a new substance...
a)
Partial Change
b)
Physical Change
c)
Chemical Change
d)
Freezing
111.
A mixture that is NOT evenly distributed is called ....
a)
Compounded
b)
Homogenous
c)
Heterogenous
d)
Salty
112.
A mixture that is so evenly mixed you can't see the parts.  Such as Kool-Aid
a)
Homogeneous Mixture
b)
Heterogeneous Mixture
c)
Pure Substance
113.
Italian Salad Dressing is a . . .
a)
heterogeneous mixture
b)
homogeneous mixture
c)
Pure Substance
d)
Compound
114.
This picture represents which of the following?
a)
element
b)
compound
c)
mixture
115.
Which of the following is an element?
a)
Sugar
b)
Salt
c)
Water
d)
Oxygen
116.
A mixture that contains two or more substances blended evenly throughout
a)
heterogeneous mixture
b)
homogeneous mixture
c)
suspension
d)
colloid
117.
A mixture in which different materials can be identified easily
a)
element
b)
heterogeneous mixture
c)
homogeneous mixture
d)
solution
118.

Does this image represent a chemical or a physical change?

a)

Chemical change

b)

Physical change

119.

Does this image represent a chemical or physical change?

a)

Chemical change

b)

Physical change

120.

What pure substance is made of 2 or more types of atoms?

a)

compound

b)

element

121.

What is the difference between a pure substance and a mixture? Select all that apply.

a)

substances are made of many different things while mixtures are just made of 1

b)

a substance has one type of particle while a mixture has 2 or more types

c)

a mixture is physically combined and can be physically separated while a substance is chemically bonded

d)

a mixture is chemically bonded together while a substance is physically combined

122.

choose the choice that best describes differences between a solid, liquid, and a gas by using the behavior of their particles.

a)

Solids have particles that are tightly packed and vibrate in place, liquids have particles that are close but can move past each other, and gases have particles that are far apart and move freely.

b)

Solids have particles that are far apart and move freely, liquids have particles that are tightly packed and vibrate in place, and gases have particles that are close but can move past each other.

c)

Solids and liquids have particles that are tightly packed, while gases have particles that are close but can move past each other.

d)

Solids have particles that are far apart and move freely, liquids have particles that are close but can move past each other, and gases have particles that are tightly packed and vibrate in place.

123.

Identify seawater as an element, compound, or a mixture.

a)

Element

b)

Compound

c)

Mixture

d)

None of the above

124.

What process of separating mixture is illustrated on the animated gif posted here?

a)

decantation

b)

distillation

c)

evaporation

d)

condensation

125.

Is this a pure substance?

a)

Yes

b)

No

126.
What two types of measurements make up DENSITY? 
a)
Mass and Volume
b)
Temperature and Mass
c)
Grams and Centimeters
d)
Volume and Weight
127.
Look at this image.  Which object has the LOWEST density in water? How? 
a)
The Ping Pong Ball because it floats to the top 
b)
The bolt because it has sunk to the bottom
c)
The soda cap because it is not just full of air like the Ping Pong ball
128.
Jack has a rock. The rock has a mass of 14g and a volume of 2cm3. What is the density of the rock?
a)
7 mL
b)
7 g/cm3
c)
28 g/cm3
d)
1/7 g/cm3
129.
Why do the liquids form different layers?
a)
They have different densities.  
b)
They have different masses.  
c)
They have different volumes.  
d)
They are different temperatures.  
130.
When experimenting with the growth of a plant, a scientist uses three (of the same type of) plants, two different fertilizers, equal light, and equal water. What type of variable is the fertilizer?
a)
Dependent
b)
Independent
c)
Control
d)
Compound
131.
What are all the things that are kept the same in an experiment?
a)
controls
b)
data
c)
constants
d)
independent variables
132.

What are the number of times each level of the independent variable is tested?

a)

constants

b)

control

c)

trials

d)

dependent variable

133.
The type of variable that you change or manipulate in an experiment.  It is what you are testing.
a)
Independent
b)
Dependent
c)
Control
134.

The vertical axis of a line graph is called the __________.

a)

slope

b)

line of best fit

c)

x-axis

d)

y-axis

135.

Find the slope of the line for the graph.

a)

1

b)

4

c)

0

d)

8

136.

Find the slope of the line for the graph.

a)

-1

b)

-4

c)

0

d)

-8

137.

Find the slope of the line for the graph.

a)

-1

b)

-4

c)

0

d)

-8

138.
The purpose of graphs, charts and tables is to
a)
help scientists visualize results from an experiment.
b)
make the experiment look nice.
c)
practice what I learned in Math class.
d)
Practice my drawing skills.
139.

The line graph shows five years of data about a dog. What information does the graph show?

a)

How the mass of the dog changed.

b)

How much food the dog consumed.

c)

What kinds of food the dog consumed.

d)

When the dog was measured each month.

140.

  Is defined as the probability that a product, system, or service will perform its intended function adequately for a specified period of time.

a)

Accuracy

b)

Authenticity

c)

   Reliability

141.
You know 1000 mg = 1 g.  Convert 2.5 grams into milligrams.
a)
25 mg
b)
25,000 mg
c)
250 mg
d)
2500 mg
142.
You know that 12 inches = 1 foot.  Convert 60 inches to feet.
a)
720 feet
b)
5 feet
c)
5 inches
d)
72 feet
143.

Convert 50 miles/h into m/s using these relationships


1 mile = 1609.34 meters "

1 hr = 60 minutes

1 minute = 60 seconds

a)

22.33 m/s

b)

80467 meters

c)

13411 m/s

144.

Match the expressions to their resulting units.

a)
1.

yards

b)
2.

centimeters

c)
3.

kilometers

d)
4.

meters

e)
5.

inches

145.
Gas costs $3.05 a gallon, and your car travels at 27 miles for each gallon of gas. How far can you travel in your car with $95 in your pocket?
a)
11 miles
b)
840 miles
c)
7800 miles
d)
870 miles
146.
A bicycle has a speed of 6 m/s. What is its speed in km/h?  (1 km=1000 m)
a)
21.6 km/h
b)
16.67 km/h
c)
2.16 km/h
d)
1.67 km/h
147.
A passenger jet has a speed of 900 km/h.
What is its speed in m/s?
(1 km = 1000 m)
a)
250 m/s
b)
324 m/s
c)
1,500 m/s
d)
2,500 m/s
148.

Match the expressions to their resulting units.

a)
1.

yards

b)
2.

centimeters

c)
3.

kilometers

d)
4.

meters

e)
5.

inches

149.

What is the equivalent of 5 fl oz per minute in gallons per hour?

a)

4.68 gallons per hour

b)

18.75 gallons per hour

c)

2.34 gallons per hour

d)

38,400 gallons per hour

150.

What is the SI unit for mass?

a)

kilograms

b)

pounds

c)

meters

d)

liters

151.

What two units can be used when measuring volume

a)

grams and seconds

b)

cubic meters and liters

c)

milliliters and centimeters

d)

cubic centimeters and kelvin

152.

What is the SI unit for length?

a)

meter

b)

mass

c)

liter

d)

second

153.

1000 grams = _____kilograms

a)

1

b)

100

c)

1000

d)

10

154.

What type of correlation does the graph show?

a)

Positive Correlation

b)

Negative Correlation

c)

No Correlation

155.

What type of correlation does the graph show?

a)

Positive Correlation

b)

Negative Correlation

c)

No Correlation

156.

What type of correlation does the graph show?

a)

Positive Correlation

b)

Negative Correlation

c)

No Correlation

157.

Which type of correlation most likely represents the relationship between number of hours studied for an exam and the grade on the exam?

a)

Positive Correlation

b)

Negative Correlation

c)

No Correlation

158.

Which type of correlation most likely represents the relationship between distance traveled to school and number of shirts owned?

a)

Positive Correlation

b)

Negative Correlation

c)

No Correlation

159.

Which type of correlation most likely represents the relationship between amount spent on heating and temperature?

a)

Positive Correlation

b)

Negative Correlation

c)

No Correlation

160.

Which graph depicts the strongest positive correlation?

a)
b)
c)
d)
161.

A positive correlation is a relationship between two variables such that as one variable decreases the other decreases.

a)

True

b)

False

162.

A negative correlation is a relationship between two variables such that as one variable increases the other decreases.

a)

True

b)

False

163.

Which variables are most likely positively correlated with temperature? Select ALL that apply.

a)

sale of ice cream

b)

number of boating accidents

c)

sales of winter clothing

d)

sales of televisions

164.

Which variables are most likely negatively correlated with screen time? Select ALL that apply.

a)

number of texts sent

b)

amount of time asleep

c)

amount of time playing video games

d)

amount of time playing sports

165.
Which scatter plot shows no relationship?
a)
Graph A
b)
Graph B
c)
Graph C
d)
Graph D
166.
What is the correlation between length of running start and distance of jump?
a)
positive:  the further you run the further you jump
b)
negative: the less you run the less distance of your jump
c)
positive: the further your running start the less your distance
167.
This refers how close a group of measurements are to eachother
a)
estimate
b)
accuracy
c)
precision
d)
mean
168.
This refers to how close the measurement is to the true or accepted value
a)
estimate
b)
accuracy
c)
precision
d)
mean
169.

The​ (a)   is what you change or the ​ (b)   while the ​ (c)   is the ​ (d)   of that change.

Choose from the below words
independent variable
dependent variable
cause
effect
170.

Why is it important to collect multiple data points when measuring speed in an experiment?

a)

To make the experiment more time-consuming

b)

To ensure the results are accurate and reliable by averaging out any anomalies

c)

 To reduce the amount of data analysis required

d)

To confuse the students

171.

  1. What is a potential issue with collecting only one data point over a series of three trials in an experiment measuring speed?

a)
It may lead to inaccurate results due to lack of variability and error accounting.
b)

It simplifies the data analysis process (i.e., the process should be hard)

c)

It ensures inconsistent results across all three trials

d)
It provides a comprehensive overview of the data.
172.

How does collecting multiple data points help in identifying anomalies in an experiment measuring speed?

a)
Multiple data points only complicate the analysis process.
b)
Collecting a single data point is sufficient to identify anomalies.
c)

Collecting multiple data points helps identify anomalies by establishing a baseline for expected speed measurements, allowing for the detection of significant deviations.

d)
Anomalies can be identified without any data collection.
173.

Why is it inadequate to collect only one data point in an experiment measuring speed?

a)
One data point is sufficient to determine speed accurately.
b)
Collecting one data point eliminates the need for further testing.
c)
A single measurement is always reliable regardless of conditions.
d)

It is inadequate because one data point does not provide a reliable measure of speed due to potential variability and measurement errors.

174.

An experimenter measures the speed of a car by recording the time it takes to travel a fixed distance. They only record the time once for each trial. What is the main issue with this approach?

a)
The experimenter measures the distance instead of the time.
b)
The approach lacks reliability due to only recording one time per trial.
c)
Recording multiple times would complicate the analysis.
d)
The fixed distance is too short to measure speed accurately.
175.

In an experiment to measure the speed of sound, the experimenter uses a stopwatch to measure the time it takes for a sound to travel a known distance. What is the flaw in this approach?

a)
The stopwatch may not be calibrated correctly.
b)
The measurement may include reaction time and not just the travel time of sound.
c)
The sound may be affected by wind conditions.
d)
The distance may not be accurately measured.

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