WorksheetsUnit 1 Practice of Science
Total questions: 25
Worksheet time: 13mins
Name
Class
Date
1.
What does an engineer primarily do?
a)
makes discoveries about the natural world
b)
develops and manufactures structures for human use
c)
makes predictions about future events
d)
develops scientific theories and laws
2.
In the 19th century, a central European scientist determined patterns in how pea plants pass on traits to their offspring. In the mid-20th century, British and American scientists determined the structure of DNA. In 2003, scientists from several countries defined the genetic makeup of humans in great detail.
These events illustrate that...
These events illustrate that...
a)
new discoveries show that previous scientific work should never have been done.
b)
scientists from different cultures cannot seem to agree on genetics.
c)
scientists from any culture can make new discoveries and build on previous discoveries.
d)
modern scientists are not as intelligent as the scientists of the last century.
3.
In the 1770s, an English scientist named Edward Jenner realized that it was possible to prevent people from contracting smallpox, if they were inoculated with cowpox. As a result of this discovery and the subsequent development of a smallpox vaccine,
a)
the smallpox vaccine has become an example of how vaccines usually fail to limit the spread of diseases.
b)
the likelihood of a smallpox outbreak occurring has become extremely large.
c)
smallpox has become increasingly common over the last two hundred years.
d)
the likelihood of a smallpox outbreak occurring has become extremely small.
4.
In 1895, a German physicist named Wilhelm Roentgen was conducting experiments with vacuum tubes, which he kept completely closed off from light, when he noticed that some sort of radiation was escaping the apparatus. He eventually realized that his vacuum tubes could produce radiation that was able to pass through many different objects including human tissues. He used this unknown type of radiation to produce a picture of his wife's hand.
This discovery eventually led to
This discovery eventually led to
a)
the use of x-ray machines to create images of the body's internal structure.
b)
the use of vaccines to limit the virulence of numerous viral diseases.
c)
the use of radioactive material to produce electricity in the form of nuclear power.
d)
the use of radioactive material to produce powerful weaponry.
5.
Cell phones are portable telephones that do not need to be attached to a phone line by wires. Cell phones first came into common usage during the 1980s.
In which of the following ways have cell phones improved people’s quality of life?
In which of the following ways have cell phones improved people’s quality of life?
a)
People who use cell phones while driving a vehicle are more likely to be in an accident.
b)
Cell phones make it easier for people to call for help during an emergency.
c)
People who use cell phones in restaurants disturb other diners.
d)
Cell phones make it difficult for people to have uninterrupted time on their own.
6.
Before the invention of airplanes, the only way to travel from Europe or Asia to America was by ship. It took most ships several weeks to cross the ocean.
How did the invention of airplanes improve people's quality of life?
How did the invention of airplanes improve people's quality of life?
a)
It allowed people to travel long distances more safely and quickly.
b)
It allowed people to see what cities looked like from above.
c)
It helped people map the ocean floor.
d)
It helped people get to work faster every day.
7.
The American scientist Oliver Evans invented the first refrigeration machine in 1805. Today, most American homes have a refrigerator in their kitchen.
How has the refrigerator improved people's quality of life?
How has the refrigerator improved people's quality of life?
a)
It helps people to eat healthier foods.
b)
It helps people avoid the use of dangerous chemicals such as pesticides.
c)
It allows people to store food longer and more safely.
d)
It allows people to enjoy foods such as ice cream.
8.
Dr. Fernando is a paleontologist who studies dinosaurs. He does not accept the idea that most of the dinosaurs went extinct when an asteroid struck the Earth's surface 65 million years ago. He thinks there should be locations with thousands of dead dinosaurs if they all died at the same time. So he decides to only conduct investigations that agree with his theories.
Dr. Fernando has become ______ when conducting his scientific investigations.
Dr. Fernando has become ______ when conducting his scientific investigations.
a)
biased
b)
impartial
c)
objective
d)
neutral
9.
Jenny tells Betty that the reason 50 million tons of salt are produced in the U.S. each year is because Americans have an unhealthy addiction to sodium.
Which of the following conclusions can Betty make about Jenny's statement?
Which of the following conclusions can Betty make about Jenny's statement?
a)
If Americans were not addicted to sodium, less than 50 million tons of salt would be produced in the U.S.
b)
Americans consume more salt than people in any other country on Earth.
c)
Consuming salt is unhealthy because sodium is an addictive chemical.
d)
Jenny has mixed facts about salt production with her opinions of salt consumption.
10.
The school science fair is next week. Laura and Kevin are each doing their own investigation on whether aspirin or ibuprofen dissolves faster. So far, Laura has found that aspirin dissolves faster, but Kevin has found that ibuprofen dissolves faster.
As good scientists, what should Laura and Kevin do next?
As good scientists, what should Laura and Kevin do next?
a)
They should repeat their investigations and look for errors.
b)
They should not try to determine which result is correct.
c)
They should flip a coin to see who is correct.
d)
They should let the class vote for which result they think is best.
11.
Autism is a disability that results from a disorder in the central nervous system. It has been speculated that the increasing number of cases of autism in recent years is due to the increase in the number of vaccinations given to young children. What might be another possible explanation for this phenomenon?
a)
The increase in immunizations is the only possible cause for autism.
b)
The increase in autism is due to an increase in television viewing.
c)
The increase in autism is due to the decline of public education.
d)
There are now better diagnostic tests available for autism, which causes more cases to be identified.
12.
A pie graph shows _______
a)
how one piece of data compares to other pieces of data.
b)
how an object changes over time.
c)
how many pieces of data are found in a data set.
d)
how a whole is broken into parts.
13.
What is the range of the temperatures below?{35° F, 49° F, 40° F, 37° F, 51° F, 38° F}
a)
10° F
b)
16° F
c)
45° F
d)
51° F
14.
The list below shows the number of applications that Amy downloaded to her phone over the last 5 months.
5 12 4 10 14
What is the median number of applications Amy downloaded to her phone each month?
5 12 4 10 14
What is the median number of applications Amy downloaded to her phone each month?
a)
10.5
b)
7.5
c)
4
d)
10
15.
Hannah's cat has 7 kittens. Hannah measures the mass of each kitten and records the data below, in grams.
{178 g, 181 g, 190 g, 195 g, 201 g, 202 g, 202 g}
What is the median mass of the kittens?
{178 g, 181 g, 190 g, 195 g, 201 g, 202 g, 202 g}
What is the median mass of the kittens?
a)
178 g
b)
193 g
c)
202 g
d)
195 g
16.
Maddie has a glass of water. Which of the following tools could she use to measure the temperature of the water?
a)
a stopwatch
b)
a graduated cylinder
c)
a spring scale
d)
a thermometer
17.
Josie has an apple. Which of the following tools could she use to measure the length of the apple from top to bottom?
a)
a triple beam balance
b)
a graduated cylinder
c)
a metric ruler
d)
a thermometer
18.
Enzo has a glass of water. Which of the following tools could he use to measure the volume of water he has in the glass?
a)
a graduated cylinder
b)
a triple beam balance
c)
a metric ruler
d)
a thermometer
19.
Isaiah has an apple. Which of the following tools could he use to measure the mass of the apple?
a)
a thermometer
b)
a triple beam balance
c)
a graduated cylinder
d)
a metric ruler
20.
A hypothesis is best described as ...
a)
a conclusion based on evidence
b)
a detailed list
c)
a summary
d)
an educated guess
21.
In the technology design process, the next step after defining a problem is to
a)
redesign.
b)
choose the best design.
c)
build a prototype.
d)
research the problem fully.
22.
A working model used to test a design is called a
a)
troubleshoot,
b)
prototype.
c)
model.
d)
trade-off.
23.
After a design has been tested successfully, what should engineers do to share information about the product?
a)
evaluate constraints
b)
communicate the solution
c)
build a prototype
d)
troubleshoot and redesign
24.
T or F
Technology is always changing.
Technology is always changing.
a)
True
b)
False
25.
T or F
Technology has no impact on society.
Technology has no impact on society.
a)
True
b)
False
100 %
