Why might a scientist choose to do fieldwork instead of a laboratory experiment?(1 point)

Question

Responses

She needs a large amount of control.
She needs a large amount of control.

He needs to change one or more variables at a time.
He needs to change one or more variables at a time.

She needs test conditions that replicate those found in nature.
She needs test conditions that replicate those found in nature.

He needs to make exact measurements using large equipment

Answer 1

She needs test conditions that replicate those found in nature.

Answer 2

Adam is a geologist. He wants to get the best possible information about lava flows from eruptions that are happening at some specific locations around the world. He wants to be able to vary what he studies based on his initial findings. Which type of investigation should Adam conduct?(1 point)
Responses

a survey
a survey

fieldwork
fieldwork

library research
library research

a laboratory investigation

Answer 3

fieldwork

Answer 4

Keesha experimented to study the rate of photosynthesis in the water plant Elodea. She placed a piece of Elodea in a beaker of water and set the beaker 10 centimeters (cm) from a light source. Keesha counted the bubbles released from the plant every minute for five minutes (min). She repeated the process two more times. First, she moved the light to 20 cm from the beaker, and then she moved the light to 30 cm from the beaker. Keesha’s setup and data are shown below. What is the outcome variable (dependent variable) in this experiment?(1 point) Responses the number of bubbles produced the number of bubbles produced the type of plant placed in the beaker the type of plant placed in the beaker the amount of time the bubbles were counted the amount of time the bubbles were counted the distance of the light source from the plant the distance of the light source from the plant Skip to navigation

Answer 5

the number of bubbles produced

Answer 6

Question If you are testing how different types of music affect concentration levels, what would be the independent variable?(1 point) Responses The type of music played The type of music played The concentration levels of the participants The concentration levels of the participants The age of the participants The age of the participants The duration of the experiment The duration of the experiment Skip to navigation

Answer 7

The type of music played

Answer 8

What is empirical evidence?(1 point)
Responses

Evidence based on personal beliefs.
Evidence based on personal beliefs.

Evidence based on experiments and observations.
Evidence based on experiments and observations.

Evidence based on historical documents.
Evidence based on historical documents.

Evidence based on theoretical models.

Answer 9

Evidence based on experiments and observations.

Answer 10

Which of the following is a correct application of empirical research?(1 point)
Responses

Using personal opinions to make a decision.
Using personal opinions to make a decision.

Changing a theory based on data from multiple studies.
Changing a theory based on data from multiple studies.

Relying on anecdotal evidence to support a claim.
Relying on anecdotal evidence to support a claim.

Ignoring empirical data in favor of traditional practices.

Answer 11

Changing a theory based on data from multiple studies.