Nature of Science

Observations that deal with a number or amount are called

• qualitative

• quantitative

The Skittles are yellow, red and green is an example of _____.

• qualitative observations

• quantitative observations

• hypothesis

The part of an experiment that doesn't change is a _____.

• control

• constant

• conclusion

The variable that is changed by the scientist to test a hypothesis is called the _________________________ .

• dependent variable

• independent variable

• control

Tags

NGSS.MS-PS2-2

Anything that can change in a scientific experiment

• variable

• constant

• independent variable

• dependent variable

Tags

NGSS.MS-PS2-2

The variable observed and measured by the scientist, the "effect"

• independent

• dependent

• constant

• controlled experiment

In a controlled experiment, ___ variable(s) is/are changed to allow you to know exactly what caused the results.

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-2

Which of the following best describes a hypothesis?

• A hypothesis is an educated guess to a parent's question.

• A hypothesis is the probability an event will occur such as winning the lottery.

• A hypothesis is a prediction about what will happen based on observations and evidence.

• A hypothesis occurs when you fall into freezing water and become very, very cold.

Laboratory experiments allow scientists to make precise observations. Which of the following is NOT and observation made in a laboratory experiment?

• making observations about the effect of fertilizer on plants growing in the lab

• comparing the colors of flowers grown in an experiment

• measuring the growth of plants exposed to different amounts of sunlight

• counting the human population in the State of Florida

Tags

NGSS.MS-LS2-1

Which choice is an independent variable?

• measuring the distance a student can jump in meters

• counting the number of ants in population

• measuring the lengths of students' hair

• providing different levels of sunlight to plants in an experiment

Tags

NGSS.MS-LS2-1