The video tutorial covers the scientific inquiry process, focusing on developing hypotheses, designing experiments, and analyzing data. It emphasizes the importance of identifying variables, using controls, and ensuring validity through large sample sizes and repeated trials. Examples include testing the effects of coconut oil on hair growth and temperature on cricket chirping.

What is one of the main objectives of scientific inquiry?

• To avoid any implications on society

• To use science to explain natural phenomena

• To develop untestable theories

• To prove all hypotheses correct

Tags

NGSS.HS-ESS1-2

NGSS.HS-ESS3-1

NGSS.HS-LS2-6

NGSS.HS-PS1-2

How should a hypothesis generally be written?

• As a question

• Both B and C

• In an if/then because format

• As a statement

What is the first step in the scientific design process?

• Drawing conclusions

• Analyzing data

• Identifying the problem

• Collecting data

Which variable is the one that you change in an experiment?

• Constant variable

• Independent variable

• Control variable

• Dependent variable

In the breakfast example, what is the dependent variable?

• The school they go to

• The age of the students

• The grades that students get

• Whether students ate breakfast

Why is it important to have a large sample size in experiments?

• To ensure the experiment is quick

• To increase the validity of the results

• To make the experiment more complex

• To reduce the number of variables

What should you do if your hypothesis is rejected?

• Change multiple variables at once

• Create a new hypothesis with the new information

• Ignore the results

• Give up on the experiment

Tags

NGSS.HS-PS1-2

In the coconut oil example, what is the control group?

• The time in the shower

• The hairbrush used

• 50 people who do not use coconut oil

• 50 people who use coconut oil

What is the independent variable in the cricket chirping experiment?

• The soil

• The temperature

• The time of day

• The type of crickets

What data would support the hypothesis that crickets chirp more in warmer temperatures?

• Crickets in warm temperature chirped 30 times more per minute

• Crickets in cold temperature chirped 30 times more per minute

• Crickets in warm temperature chirped less

• Crickets in cold temperature chirped the same amount