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WorksheetsUnit 1 - Science, Technology, and Engineering Design Test Review
Total questions: 47
Worksheet time: 47mins
A student is working on an experiment that requires her to measure the lengths of different tubes. The student records the lengths in the table above. What, if anything, is wrong with the student’s table?
Tube 3 should be measured in centimeters.
Tubes 1, 2, and 4 should be measured in inches.
Nothing; all of the measurements are appropriate.
Tubes 3 and 4 are the same length, but they should be different lengths.
During which step of the engineering design process would a scientist publish a report in a scientific journal?
prepare preliminary designs
test a prototype
conduct background research
communicate results
Which of the following is a thinking skill that helps engineers develop relationships between evidence and explanations?
using creativity
using computer technology
creating models
forming opinions
Ancient peoples noticed that when meat was a few days old, maggots appeared on it. They thought that the maggots came from the meat. During the 1600s, an Italian physician named Francesco Redi developed a theory that the maggots came from flies that laid eggs on the uncovered meat. He tested his idea by keeping flies away from meat. Maggots did not appear on the meat that Redi protected from the flies. Which of the following best shows that Redi was thinking like a scientist?
Redi did not do experiments; he used only logic.
Redi made an explanation that he was able to test.
Before he had experimental results, Redi said that they old theory was not correct.
Before he did his experiments, Redi said that he would not change his mind about his theory.
A store owner notices an increase in shoplifting of jewelry and other small items. She decides to use the engineering design process to find a solution to her problem. Which of the following describes how she can use technology to gather data about the shoplifting?
using computer software to allow for online purchases
using scanners to ring up purchases
using video cameras to monitor shoppers
using automatic timers on bathroom lights
The engineering design process may result in many solutions to a problem. Even after collecting evidence, engineers may disagree about which solution is the best. Which of the following is not a valid reason to conclude that a solution is the best one?
The solution has the best ratio of environmental cost and benefits.
The solution uses materials that are readily available.
The solution has the lowest financial cost.
The solution was the engineer’s first idea.
A scientist finds a petri dish that had been used in an experiment several days earlier. The petri dish had not been cleaned after the experiment. In the dish, the scientist discovers a bacterial culture that she had not seen during the experiment. She wants to investigate whether the bacteria developed from the material left from the earlier experiment. Which of the following is a way for her to begin testing?
Take a sample of the bacteria and grow it in an incubator.
Gather dirty petri dishes from other labs to see if they grow the same bacteria.
Check all the clean petri dishes for the new bacterial culture.
Run the original experiment again, do not clean some of the petri dishes, and see if the same bacterial culture grows in the dirty petri dishes.
A student measures the time it takes for a sheet of paper to fall to the ground from a marked height. The student then crumples the same piece of paper and drops the paper from the same height. The student observes that the paper fell faster the second time. What was the independent variable?
the shape of the paper
the height of the drop
the length of time for the paper to fall
the speed at which the paper fell
Why was the International System of Units (SI) developed?
It was developed to allow countries to follow their own systems of measurement.
It was developed to compete with the English Standard System of Units.
It was developed to help scientists compare measurements made by different people in different locations using different tools.
It was developed to help scientists keep their data, observations, and measurements secret from other scientists.
Which of the following is not a correct match between a measurement and the tool used to make that measurement?
mass: graduated cylinder
time: stopwatch
length: meter stick
temperature: thermometer
Thomas used toothpicks and balls of clay to represent a water molecule. The balls of clay represent atoms, and the toothpicks represent bonds. Why is a model an effective way to understand the structure of water?
It is too dangerous to observe a water molecule.
Water molecules are too small to be easily seen.
The structure of water is not really known.
Water is too complex to be easily understood.
The population of squirrels in a forest has increased every 5 years, as shown in the graph below. Between which years did the population of squirrels increase the most?
1980 and 1985
1995 and 2000
1990 and 1995
1985 and 1990
Student backpacks are designed using the engineering design process. Backpack designers make three prototypes of the same backpack. Each prototype uses exactly the same design and technique but different fabrics. Look at the results of testing for each of the prototypes. Based on the information above, which of the following statements explains the relationship between the mass of the backpack and the maximum load the backpack can carry?
As the fabrics get thinner, they are able to support more load.
As the fabrics are sewn better, they are able to support more load.
As the fabrics get heavier, they are able to support more load.
As the fabrics age through use, they are less able to support heavy loads.
Scientists use computer models to study how black holes form in space. What is the most likely reason a computer model is being used?
Black holes do not actually exist.
Black holes are too small to study.
Black holes are too dark to study.
Black holes are too far from Earth.
Which of the following statements about empirical evidence and conclusions is correct?
Empirical evidence is collected during experiments, and conclusions are collected during engineering processes.
Empirical evidence is collected through observation, and conclusions are the results of interpreting empirical evidence.
Empirical evidence is based on the bias and pinions of scientists, and conclusions are based on facts.
Empirical evidence is important for the engineering processes, and conclusions are important for scientific processes.
Juan walks into a room and flips on the light switch, but nothing happens. What can Juan conclude from this observation?
Someone has turned off the electric power to the building.
The light switch is not working.
He needs more information before he can make a conclusion.
The light bulb is burned out.
Reece completed an experiment by rolling toy cars down a ramp. He then created the table below to show his results. What is the main problem with the table?
There are too many rows.
The title is incorrect.
The values are incorrect.
The SI units are missing.
During which step of the engineering design process would a scientist publish a report in a scientific journal?
test a prototype
prepare preliminary designs
conduct background research
communicate results
Mackenzie investigates how the volume of gas inside a balloon changes as the temperature of the gas changes. She takes an inflated, sealed balloon from a freezer and uses a string and a meter stick to measure the balloon’s circumference. She moves it to a sunny window for 15 minutes. Then, she measures the circumference with a tape measure. She records these measurements in a data table. Mackenzie realizes that she made a mistake in her experimental procedure. What was wrong with her procedure?
Data should not be recorded directly into a data table.
She measured circumference using two different methods.
She conducted the experiment by herself.
She changed the amount of gas in the balloon.
Which of the following pairs of statements correctly identifies the goals of science and engineering?
science: develop manmade systems;
engineering: develop tools and machines
science: improve human quality of life;
engineering: learn about the natural world
science: develop new technology to explore the natural world;
engineering: apply mathematics to the study of the natural world
science: construct explanations of the natural world;
engineering: address the needs of society
Marvin is studying how joints move. He used the hinge shown below to represent how the elbow moves. Which of these phrases best describes what Marvin is doing?
observing nature
collecting data
taking measurements
using a model
Which of these is an observation that could be used to form a testable hypothesis for a scientific investigation?
Dogs prefer canned food to dry food.
My dog seems sad.
Dogs have four legs and a tail.
Dogs think about people all the time.
A scientist wants to track a hurricane and predict where it will go next. What is the best tool for the scientist to use?
computer
hand lens
magnetic resonance image
electron microscope
Imagine that the climate on an island is expected to change over time. Scientists want to determine how the change will affect the animals on the island. They create a computer model that takes into account all the factors that will change. What is most likely true about the computer model?
It will be useless because it includes too many factors.
It will allow the scientists to stop the climate from changing.
It will help the scientists predict likely changes to the animals.
It will provide exact information about the future of the island.
The graph below shows the population of squirrels in a forest over a 20-year period. In which year was the population of squirrels in the forest about 280?
1980
1985
1990
1995
A friend reads in a book that a piece of black paper will get warmer in sunlight than a piece of white paper. Which of these is a scientific reaction to this information?
Accept the statement as true because your friend knows about science.
Design an experiment to show whether the statement is correct or incorrect.
Believe the statement because it was written in a book, so you can trust it to be true.
Tell your friend that the statement makes no sense.
Convert 1600 meters to kilometers.
1.6 km
16 km
0.16 km
160 km
What is the correct standard notation for this number: 1.2 x 10-1
0.012
0.12
120
12
What is the correct scientific notation for this number: 101,000
101 x 103
1.01 x 10-5
1.01 x 105
101 x 10-3
Below are the results of a chemistry lab experiment. If the object measured has a mass of 35 kg, what can be said about the measurements?
The measurements are accurate and precise.
The measurements are neither accurate nor precise.
The measurements are precise but not accurate.
The measurements are accurate but not precise.
A laboratory scientist wants to get a precise measurement of the volume of a liquid. Which tool would the scientist most likely use?
beaker
test tube
petri dish
graduated cylinder
Scientists use which one of the following units to measure mass?
pound
meter
kilogram
ounce
Good experiments follow organized procedures. Which of these phrases describes another characteristic of a good scientific experiment?
repeated trials
uncontrolled surroundings
small sample size for collecting data
variable procedures for obtaining data
Controlled experiments include variables. Which statement describes the difference between an independent variable and a dependent variable?
The dependent variable does not change, and the independent variable does change.
The dependent variable does not change, and the independent variable does not change.
The dependent variable is the control that brings about the results of the independent variable.
The dependent variable changes based on the independent variable.
Convert 499 cm to km.
0.00499 km
0.499 ,m
499,000 km
49,000 km
What is the correct standard notation for this number: 6.3 x 104?
630,000
0.00063
0.000063
63,000
Convert 65 g to mg.
65,000 mg
6,500 mg
650 mg
6.5 mg
What is the correct scientific notation for this number: 0.0043
43 x 10-4
43 x 104
4.3 x 103
4.3 x 10-3
What is the correct standard notation for this number: 2 x 10-4
20,000
0.00002
2,000
0.0002
What is the correct standard notation for this number: 6.9 x 103
0.00069
6,900
0.0069
69,000
Convert 104 kL to L.
1040 L
0.104 L
104,000 L
10,400 L
What is the correct scientific notation for this number: 0.0069
69 x 104
6.9 x 10-3
6.9 x 103
69 x 10-4
What is the correct scientific notation for this number: 0.875
875 x 103
875 x 10-3
8.75 x 101
8.75 x 10-1
What is the correct scientific notation for this number: 172,000
17.2 x 10-4
1.72 x 105
1.72 x 10-5
172 x 103
Convert 1600 meters to kilometers.
1.6 km
16 km
0.16 km
160 km
What is the correct standard notation for this number: 1.2 x 10-1
0.012
0.12
120
12
What is the correct scientific notation for this number: 101,000
101 x 103
1.01 x 10-5
1.01 x 105
101 x 10-3
