Exploring Independent, Dependent, and Controlled Variables

The video is a re-recording of a previous lesson on scientific variables, now in high definition. It explains independent, dependent, and controlled variables using a running experiment. The independent variable is the type of shoe worn by the runner, the dependent variable is the time taken to run 100 meters, and controlled variables include weather, clothing, and surface. The video emphasizes the importance of controlling variables for a fair comparison. The lesson concludes with a call to action for viewers to like and subscribe.

What was the primary reason for re-recording the video?

• To change the experiment

• To shorten the video

• To improve video quality

• To add more content

Tags

CCSS.RI.8.7

CCSS.RL.8.7

CCSS.RI.6.7

CCSS.RL.6.7

CCSS.RI.7.7

Which variable does the experimenter change during the experiment?

• The type of shoes

• The running track

• The runner's clothing

• The weather conditions

What is measured in the experiment to determine the effect of the independent variable?

• The distance run

• The time taken to complete the run

• The speed of the runner

• The type of shoes

What is the dependent variable in the described experiment?

• The weather condition

• The runner's performance time

• The running track

• The type of shoes

Which type of shoes allowed the runner to achieve the fastest time?

• Sandals

• Casual shoes

• Boots

• Runners

What must be kept constant to ensure a fair comparison between different runs in the experiment?

• The weather conditions

• The type of shoes

• The audience presence

• The runner's mood

Why is it important for the runner to wear the same clothing in each trial?

• To prevent any influence on running time

• To match the shoes

• To look professional

• To ensure comfort

What is the role of controlled variables in this experiment?

• They are changed to see different results

• They are kept the same to ensure fairness

• They vary depending on the runner

• They are not important

What could potentially invalidate the experiment's results?

• All of the above

• Changing the runner each time

• Running at different times of day

• Using different running tracks

How does the video encourage viewers at the end?

• By asking for donations

• By requesting likes and subscriptions

• By offering a prize

• By promising a follow-up video

Tags

CCSS.RI.8.7

CCSS.RL.8.7

CCSS.RI.6.7

CCSS.RL.6.7

CCSS.RL.7.7