Scientific Experiments and Variables Worksheet

Do students do better on science tests if they watch science videos? What is the CORRECT HYPOTHESIS?

• If students watch science videos, then their test scores will be higher.

• Students who don’t watch science videos get better scores.

• Watching science videos improves learning.

• Test scores will increase when students are smarter.

Do students do better on science tests if they watch science videos? What is the TEST (INDEPENDENT) VARIABLE?

• Type of test given

• Whether or not students watch science videos

• Student seating arrangement

• Number of questions on the test

Do students do better on science tests if they watch science videos? What is the OUTCOME (DEPENDENT) VARIABLE?

• Student test scores

• Time of day the test is given

• Teacher giving the test

• Length of each video

You are planning an experiment to test the effects of different sneakers on short distance run time. Which variable should be held constant?

• Length of the track

• Type of sneakers worn

• Running time of each athlete

• Number of athletes competing

You are planning an experiment to test the effects of different sneakers on short distance run time. Which is the TEST (INDEPENDENT) VARIABLE?

• Type of sneakers worn

• Athlete's body weight

• Temperature outside

• Length of the track

You are planning an experiment to test the effects of different sneakers on short distance run time. Which is the OUTCOME (DEPENDENT) VARIABLE?

• Short distance run time

• Number of sneakers tested

• Track surface used

• Gender of the athlete

You and your friends measure the effect of different exercises on heart rate. What is the OUTCOME (DEPENDENT) VARIABLE?

• Heart rate

• Type of exercise

• Amount of rest between exercises

• Age of participants

You and your friends measure the effect of different exercises on heart rate. What is the TEST (INDEPENDENT) VARIABLE?

• Type of exercise

• Heart rate

• Students’ heights

• Time of day

You and your friends measure the effect of different exercises on heart rate. What is the CORRECT HYPOTHESIS?

• If students do jumping jacks, then their heart rate will increase more than during stretching.

• Exercise changes heart rate in students.

• Heart rate goes up when people move.

• If students have higher heart rates, then they must have exercised.

Your teacher wants to test whether crickets, mealworms, or veggies promote the most growth in a bearded dragon. What is the TEST (INDEPENDENT) VARIABLE?

• Type of food given

• Weight of the bearded dragon

• Temperature in the tank

• Size of the cage

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1