W3D4: Unit 1: Doing Science Quiz

Use the video here to answer question 1-3!

These mythbusters wanted to see if modeling a car after a golf ball would allow for a car to go farther on less gas. If their hypothesis for this experiment was "Adding dimples to a car, like a golf ball, will not cause it to have better gas mileage than a normal, undimpled car" What is the INDEPENDENT variable?

• The car without the dimples

• The track that they were driving the cars down

• The masses of the cars and their fuel consumption

• Whether the car had dimples or not

Answer explanation

The variable that is being tested here (or changed) is whether the car had dimples in it or not. We want to know if having dimples or not having dimples is going to affect the fuel efficiency of the car.

Use the video still from question 1 to answer this question:

If the hypothesis for this experiment is "The dimpled car will cause the car to have a smaller fuel consumption/gas used per mile" What is the DEPENDENT variable for this experiment?

• The number of dimples on the car

• The gas mileage or fuel consumption of the car

• The speed the car was going during the experiment

• The car without the dimples

Answer explanation

When we think about the dependent variable: this is the variable that we measure (the data we are gathering). We are changing whether each car has dimples in them or not (IV) to measure if the car with the dimples has better gas mileage/less fuel consumption than the car without dimples because it has less drag (like a golfball with dimples on it). That makes the gas mileage the DV.

Using the same video, if their hypothesis was "Adding dimples to a car, like a golf ball, will not cause it to have better gas mileage than a normal, undimpled car" What was the final result of this experiment? Was their hypothesis right or wrong? Check all that are correct

• Their hypothesis was correct

• Their hypothesis was incorrect

• The dimpled car had better gas mileage than the undimpled car

• The undimpled car had better gas mileage than the dimpled car

• Nothing happened

Answer explanation

The didn't think that there would be a difference between the undimpled and dimpled cars in their ability to have better gas mileage than the other. According to their data and results, the dimpled car got at least 3 miles per gallon more (got more gas mileage/better fuel consumption) than the undimpled car.

What is the volume? Count by 2s.

• 22 ml
• 25 ml
• 28 ml
• 18 ml

How many milliliters is this? 

• 500mL
• 700mL
• 650mL
• 550mL

What is the mass?

• 155g
• 105g
• 105.6g
• 105.2g

What is the mass?

• 72.3g

• 7.23g

• 72g

Which liquid is the least dense?

• oil
• water
• syrup 
• plastic bottle

Tags

NGSS.5-PS1-3

Which month had the biggest difference between the high and low temperatures?

• January

• April

• October

• November

Tags

NGSS.MS-ESS2-5

What is the difference between the most and least number of candy bars students liked?
 

• 8
• 7
• 6
• 5