Scientific Investigations

In a laboratory, the following should not be worn.

• loose clothing.

• dangling jewlery.

• sandals.

• all of the above.

Which of the following is the best example of a hypothesis?

• If I talk to plants, then they will grow faster.

• I see a grass moving in the wind.

• The American flag is red, white, and blue.

• The town of Bandera was founded in 1853.

Which of the following lists the steps of the scientific method in order?

• Question - Hypothesis - Materials - Procedure - Data - Conclusion

• Materials - Procedure - Problem - Hypothesis - Data - Conclusion

• Hypothesis - Procedure - Problem - Materials - Data - Conclusion

• Procedure - Problem - Materials - Data - Conclusion - Hypothesis

The dependent variable in this experiment is - 

• Number of Bacteria
• Time of Incubation
• Culture Number
• Type of Bacteria

Sabrina wants to test which brand of popcorn pops the most kernels.  She picked a store brand, Orville Redenbacher, and PopSecret.  All three bags started with the same number of kernels.  She popped each for 3 minutes in the same microwave, and then counted the number of kernels left over.  What is her independent variable?

• Number of kernels left over
• Brand of popcorn
• number of kernels before popping
• length of time cooking

Tags

NGSS.MS-ETS1-3

Which question could Julie answer most easily by conducting a scientific experiment?

• Does the mass of an ice cube change when it melts?

• How long does it take for water to freeze?

• What is the temperature of the water?

• Does ice melt faster in air or in water?

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

Which statement best describes the nature of science?

• The nature of science is for scientists to prove that their hypotheses are correct.

• The nature of science is to recreate nature in the laboratory.

• The nature of science is for scientists to prove their point of view is correct.

• The nature of science is to investigate and understand the natural world and to use this understanding to make useful predictions.

Tags

NGSS.MS-PS1-2

The number of apples in this basket is ______________________ data?

• quantitative
• qualitative
• independent
• dependent

When working in the laboratory, what pieces of safety equipment should a scientist always use?

• Fire Blanket and Eye Wash
• Goggles and Lab Apron
• Fire Extinguisher and Safety Shower
• Gloves and Eye Wash

A student wanted to know if the type of water affected how tall seedlings grew. The student plans to measure the height of seedlings everyday for 3 weeks. Which of the following is the best unit for the student to measure the height of the seedlings?

• Millimeters
• Centimeters
• Meters
• Kilometers