Race Practice

According to the line graph pictured, which car had the faster speed?

• Car A

• Car B

• Both cars had the same speed

• Neither car was faster

Tags

NGSS.MS-PS3-1

What is the speed of a car that travels 400 m in 20 minutes?

• 20 miles/hr

• 20 m/min

• 800 m/min

• 200 miles/hr

What is the speed of a man who runs 10 miles in 1 hr?

• 20 miles

• 10 m/min

• 10 miles/hr

• 20 hrs

Tags

NGSS.MS-PS3-1

Angelina noticed that when she listens to music, while she grooms her horses, the horses seem calmer and happier. She wonders if a calmer , happier horse would be faster in a race. For 3 days in a row Angelina ran her horse as usual, timing each run. For the next 3 days, she hooked up her iPod near the horse's ear. It played soothing, classical music. She then timed each run.

• IF Angelina's horse is calmer and happier THEN it will run faster

• Listening to music is good for a horse

• IF the horse runs faster THEN it is because it is calmer and happier

Answer explanation

Hypothesis must be If... Then

Always If... IV .. then... DV

Tags

NGSS.MS-ETS1-1

What is the primary variable being tested in Angelina's experiment with her horse and music?

• The speed of the horse

• The type of music played

• The time of day the horse runs

• The distance the horse runs

Which scientific method step is Angelina performing when she times her horse's runs with and without music?

• Formulating a hypothesis

• Conducting an experiment

• Analyzing data

• Drawing a conclusion

What could be a potential control variable in Angelina's experiment?

• The type of music played

• The horse's diet

• The timing method used

• The weather conditions

If Angelina wanted to test a different hypothesis, which of the following could be a new independent variable?

• The horse's breed

• The volume of the music

• The horse's age

• The type of shoes the horse wears

What is a possible conclusion Angelina could draw if her horse runs faster with music?

• Music has no effect on horses

• Music makes horses slower

• Music may enhance horse performance

• Music is harmful to horses

Which of the following is an example of a dependent variable in Angelina's experiment?

• The horse's speed

• The type of music

• The horse's breed

• The time of day