The Practice of Science

Terms and Vocabulary

100

A proposed explanation made on the basis of limited evidence as a starting point for further investigation.

What is a hypothesis

200

a view or judgment formed about something, not necessarily based on fact or knowledge.

What is an opinion

300

is a source of knowledge acquired by means of observation or experimentation.

What is evidence

400

is any factor that can be controlled, changed, or measured in an experiment.

What is a variable

500

in a scientific experiment is the group where the experimental procedures are performed.

What is an experimental group

Scientific Method

100

The process of obtaining information by using the senses is called a/an

What is observations

200

A series of steps designed to help you solve problems and answer questions

What is the Scientific Method

300

In which step of the scientific method do we want to use graphs A) analyze data B) asking questions C) make a hypothesis D) communicate results

What is analyze data

400

The final part; a summary of reasonable inferences is a/an A) controlled experiment B) hypothesis C) conclusion D) question

What is a conclusion

500

A scientist who wants to study the affects of fertilizer on plants sets up an experiment. Plant A gets no fertilizer, Plant B gets 5 mg. of fertilizer each day, and Plant C gets 10mg. of fertilizer each day. Which plant is the control group. A) Plant B B) All of them C) Plant A D) Plant C

What is Plant A

Experiments

100

In an experiment, the one variable that is changed is called the

What is independent variable

200

In an experiment, the factor that we measure is called the

What is dependent variable

300

A scientist hypothesizes the the temperature at which an alligator's egg is incubated will determine whether the alligator will be male or female. The independent variable is A) the temperature B) the male alligators C) the incubator D) the gender of the alligator

What is the temperature

400

A scientist hypothesizes the the temperature at which an alligator's egg is incubated will determine whether the alligator will be male or female. The dependent variable is A) the size of the baby alligators B) the incubator C) the gender of the baby alligators D) the temperature

What is the gender of the baby alligators

500

All the things in an experiment that must be the same to make it fair are called A) controlled experiments B) dependent variables C) controlled variables or constants D) independent variables

What is controlled variables or constants

Scientific Knowledge

100

What are the three types of scientific investigations?

Observational, comparative, and experimental.

200

What type of investigation involves collecting qualitative and quantitative data to draw conclusions about a natural or man-made system?

Observational.

300

Nancy performs an experiment for her science class and has her friend Steve perform the same experiment. Why would she do this? 

A. Because it will get her a better grade 

B. Because she wants to see if her results were correct

C. Because she knows she did it correctly but wants to see if Steve can follow directions

B. because she wants to see if her results were correct.

400

Conclusion for an experiment are only valid if

a.the experiment was controlled (fair test)

c.the conclusion are based all on all available evidence

b.the conclusion are based on evidence

d.all of the above.

What is all of the above.

500

You asked all your classmates what their favorite food is. The answers are as follows: Pizza ---------14 Hamburgers ---6 Sushi ---------27 Pop Tarts -----25 Broccoli -------24 Which of the following graphs would best represent this data? 

a. Line graph 

b.Pie graph 

c.Scatter plot 

d.Bar graph

What is Bar graph

HodgePodge

100

Identify the independent and dependent variables:

A student wanted to test how the mass of a paper airplane affected the distance it would fly. Paper clips were added before each test flight. As each paper clip was added, the plane was tested to determine how far it would fly.

The number of paper clips (IV) and the distance the plane flew (DV).

200

Scientists based their explanations of natural events on (evidence / opinions).

Evidence

300

In a scientific investigation, conclusions are drawn directly after _____. 

A. the hypothesis is revised 

B. results have been communicated to other scientists 

C. data have been interpreted 

D. the hypothesis has been stated

What is data have been interpreted

400

Nancy performs an experiment for her science class and has her friend Steve perform the same experiment. Why would she do this? 

A. Because it will get her a better grade 

B. Because she wants to see if her results were correct

C. Because she knows she did it correctly but wants to see if Steve can follow directions

.

B. because she wants to see if her results were correct.

500

Thomas and Julie wanted to find out which material would insulate their teacher's coffee cup and keep the coffee hot for the longest period of time. They first wrapped her cup with bubble wrap and recorded the temperature of the coffee once every 15 minutes for 2 hours. They repeated the investigation, this time using newspaper instead of bubble wrap, but they got the same results for both materials. What could they do to make sure their results are valid? A. Repeat their experiment. B. Use tea instead of coffee. C. Use a different thermometer. D. Conduct their investigation in a colder room.

What is Repeat their experiment.