Nature of Science Review

What is the outcome (DEPENDENT) variable?

• plant height

• time in days

• sunflower

• daisy

Fred and Barney were given an assignment to go to a school basketball game and write down everything they each saw, heard, smelled, and touched. Afterwards the two students were to compare and contrast their findings and write up a summary of their combined data. In this case when they wrote down what they saw, heard, smelled and felt was considered?

• They were creating a hypothesis

• They were making inferences

• They were writing down their observations

• None of the above

Cindy placed three beehives with the same mass into separate (but identical) glass containers. Hive A was kept at 10 degrees Celsius (˚C), Hive B was kept at 29 ˚C, and Hive C was kept at 37 ˚C. For the next month she measured the amount of honey each hive produced. Hive B produced more than the other two hives.

What is the Manipulated (INDEPENDENT) variable in her experiment?

• The temperature of each hive

• The number of hives

• The mass of each hive

• The amount of honey produced

Tags

NGSS.MS-PS1-4

What is the best definition of the term "theory", as it’s used in science?

• What is the best definition of the term "theory", as it’s used in science?

• It is well tested set of ideas that explains events that occur in nature.

• A theory is based on laws that can be proven true.

• It is a hypothesis that has been confirmed

What is the difference between a scientific theory and a scientific law?

• A theory is a well-tested range of representations and a law is a concrete physical representation.

• A theory is a well-tested range of observations of why something works and a law is a well-tested concrete explanation how things work

• A theory is a well-tested range of observations of how something works and a law is a well-tested concrete explanation of why things work

• A theory is a hypothesis that is yet to be proven false and a law is a hypothesis that will always be true.

Hannah observes that the sun always seems to rise in the east. She talks with others and finds that everyone has the same observation. Which statement is a scientific law?

• The sun rises in the east.

• Why does the sun rise in the east?

• The sun appears in the east because of Earth’s rotation pattern.

• If the sun appears in the east, then I am in the Western Hemisphere

Tags

NGSS.MS-ESS1-1

Which phrase defines a scientific theory?

• A well supported explanation

• An untested idea

• An educated guess

• An accepted description

Scientists conduct many types of scientific investigations. Their efforts often include fieldwork, surveys, models, and experiments. Which statement about scientific investigations is true?

• Their primary purpose is to compare or describe the world.

• They rarely involve the collection of data under controlled conditions.

• They follow exactly the same steps because there is only one scientific method.

• They include multiple trials to increase the consistency of the data that are collected.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS1-2

A constant is:

• something that is changed on purpose

• something that scientists do not yet understand

• something that stays the same

• something that changes because of something else

A student hypothesized that the amount of sunlight a sunflower plant receives determines the number of sunflower seeds the plant produces. In her experiment, the number of seeds produces is the______

• Test (independent) variable

• Outcome (dependent) Variable

• Control Variable

• Control group