You water three sunflower plants with salt-water. Each plant receives a different concentration of salt solutions. A fourth plant receives pure water. After a two- week period, the height is measured.

What is the Dependent Variable?

• Salt Water

• Soil

• Plant Height

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

A student models an impact crater on the Moon by dropping a marble from a known height onto a pan of smooth flour. Before reaching any conclusions about the results of this simple experiment, the student repeats the activity several times to

• Assure that the results are consistent and valid (true).

• Produce as large a crater as possible before measuring a diameter.

• Simulating a meteor impact becomes more realistic with practice.

• Illustrate a perfectly circular crater for her write-up of the experiment.

Tags

NGSS.MS-PS2-1

Scientists test their ideas by

• Publishing in scientific journals

• Performing experiments

• Developing theories

• None of the above

Tags

NGSS.MS-PS1-2

NGSS.MS-PS2-2

The part of the investigation that stays the same is the

• Control

• Independent Variable

• Constant

• Dependent Variable

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-5

Which scientific skill are you using when you see that the sky is cloudy?

• Making a qualitative observation

• Posing a question

• Drawing a conclusion

• Making an inference

What is the first step in a scientific investigation?

• Gather background research

• Conduct an experiment

• Ask a question or identify a problem

• Make a conclusion

A student investigates to find out which brand of gas will make a car drive the fastest. The student tests Wawa, Sheetz, and Exxon gasolines. What is the independent variable in the investigation?

• Brand of gasoline

• Speed of the car

• The car

• The student

Tags

NGSS.MS-PS2-2

An earthquake causes massive destruction in a city . What two spheres are interacting?

• Hydrosphere and Atmosphere

• Geosphere and Hydrosphere

• Geosphere and Biosphere

• Hydrosphere and Biosphere

Tags

NGSS.MS-ESS3-2

A student investigates to find out which brand of fertilizer helps plants grow the tallest. One plant is given Miracle Grow, and one is not given fertilizer. The student gives the plants the same amount of sunlight and water. The student measures the growth every day. What is the control in the investigation?

• The type of plant

• The plant with no fertilizer

• The type of pot

• The plant with Miracle Grow fertilizer

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

A bird flew over the ocean, dove into the water to catch a fish, and then flew back into the air. What two spheres did the bird interact with?

• Atmosphere and hydrosphere

• Lithosphere and watersphere

• Hydrosphere and lithosphere

• Atmosphere and lithosphere

Tags

NGSS.MS-ESS2-6