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WorksheetsModule 1 Test 1 Review 8th Grade
Total questions: 55
Worksheet time: 56mins
When a scientific experiment is replicated by another researcher, the outcomes
Should be consistent with the original findings.
Will always be exactly the same as the original results.
Should be entirely different due to different researchers.
Should vary significantly because of the time gap between experiments.
A liquid has a mass of 50 grams and occupies a volume of 10 ml. Calculate its density.
5 g/ml
0.2 g/ml
60 g/ml
5
0.5 g/ml
A metal block has a mass of 150 grams and occupies a volume of 50 cm³. What is its density?
3 g/cm³
0.3 g/cm³
30 g/cm³
300 g/cm³
The liter is a unit of
volume
mass
density
length
A metric unit for mass is
grams
meters
liters
pounds
What is the volume of the ring?
4 mL
60 mL
64 mL
68 mL
What is the volume of the rock?
50 mL
75 mL
25 mL
125 mL
What is the value on the balance?
444.0 g
144 g
140.1 g
What is the value on the balance?
307 g
37.3 g
137.4 g
What is the value on the balance?
480.5 g
840.05 g
408 g
Find the mass.
285.3 g
275.5 g
275.3 g
1000 m = ___________ km
100
10
1
0.1
0.932 g = ___________ mg
9.32
93.2
932
9,320
Jamie is testing how the amount of salt affects how long it takes water to boil. When Jamie finishes her experiment, she will ask Tommy, another scientist, to repeat the experiment. Jamie is practicing ________.
replication
repetition
Jamie is testing how the amount of salt affects how long it takes water to boil. She knows that to validate her conclusions, she must perform many trials. Jamie is practicing ________.
replication
repetition
You have been injured in the laboratory (cut, burn, etc.). First, you should
visit the school nurse
tell the teacher immediately
see a doctor after school
If you break a glass container during lab, you should ___________________
clean it up immediately
Tell your teacher immediately
leave it and tell your teacher after the lab is completed
Conduct yourself in a _____________ manner at all times in the laboratory.
honest
silly
responsible
What is this?
An Erlenmeyer Flask
A Beaker
A Test Tube
A Vial
Used to pour liquids into containers with small openings or to hold filter paper.
funnel
bunsen burner
eye dropper
ring clamp
A narrow-mouthed container used to transport, heat, or store substances, often used when a stopper is required.
Erlenmeyer flask
triple beam balance
test tube
eye dropper
Protects the scientist and the clothes from hazardous or hot chemicals
lab coat
test tube
lab stand
graduated cylinder
A small glass container used to view chemical reactions or to heat small amounts of a substance.
test tube
striker
ring clamp
funnel
The vertical axis of a line graph is called the __________.
slope
line of best fit
x-axis
y-axis
What is an independent variable?
the variable that changes because another variable changes
independent variables are only found on pie charts.
a variable most often found on the y-axis
the variable the experimenter changes or manipulates.
Which type of graph best represents data over a set period of time?
line
bar
table
circle
How the mass of the dog changed
How much food the dog consumed
what kinds of food the dog consumed
When the dog was measured each month
The cooler the temperature, the louder the crickets chirp.
The crickets cannot chirp at temperatures lower than 10 degrees C.
The warmer the temperature, the more often crickets chirp.
The temperature and the chirping of crickets are not related.
What is a variable?
Something used to compare the parts of a whole
Something that is useful for displaying data or information that changes over time
Any display of information with tabs, rows and/or columns
Anything in an experiment that can change and can affect the outcome of the experiment
24. Cathy designs an experiment to investigate how well cups made of different materials maintain the temperature of a cold drink. Which step will increase the accuracy and validity of Cathy’s results?
A. Use a different beverage in each cup.
B. Conduct the experiment in a cool room.
C. Conduct multiple trials and have another scientist repeat the experiment.
D. Analyze the experimental results and organize experimental data in a table.
Scientists frequently replicate experiments of other scientists. Why is this important?
Replication of experiments helps confirm/verify results.
Scientists frequently perform other scientists' experiments in order to practice their technique.
Scientists often ask each other for help when performing experiments.
Replicating experiments is an effective way of making sure a laboratory is in optimal condition.
Juan is flying home to visit his parents. He packs his suitcase that has a mass of 2,500 g and volume of 250 cm3. The suitcase's density would be (a) g/cm3.
(Numberic answer or spell it out no capital letters).
What type of footwear would be best worn in a laboratory?
High Heels
Sandals
Sneakers
Flip-Flops
What is the density of the rock?
The graph below shows the mass and volume of three different samples of the same mineral, X, Y, and Z. Based on the graph, the volume of a 120-gram sample of this mineral is
40 cm3
50 cm3
60 cm3
70 cm3
Kevin is identifying samples of three unknown metals. One of the properties he will use for identification is density. The table shows the mass and volume for each sample. Kevin knows that the units of density are grams per cubic centimeter (g/cm3). Calculate the density for sample 3 and find the answer bellow.
4.50 g/cm3
10.49 g/cm3
4.50 g/cm
87.26 g/cm3
.22 g/cm
Select the temperature in °C
40°C
100°C
96°C
36°C
