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Unit 1- Experiment Design Quiz

Last updated over 4 years ago

11 questions

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Question 1

1.

Two kids decide to test if drinking caffeine increases their heart rate. They both test their resting heart rate, and drink a cup of coffee, then remeasure their heart rates an hour later. Select their independent and dependent variable. (Drag to the correct category).

The two kids
Coffee or no coffee
Heart rate
Size of the cup of coffee

Independent Variable
Dependent variable

Question 2

2.

This graph shows the results of an experiment. Identify the independent, dependent and control varaiables. (Drag each item to its correct category).

Amount of Sunlight
Amount of Soil
Type of Fertilzer
Height of Plants

Independent Variable
Dependent Variable
Control Variables

Question 3

3.

Ari and Elyse were playing basketball after school. They noticed that one of their basketballs has lower air pressure compared to the other. They decide to do an experiment to test if the difference in air pressure affects their free throw shooting percentage. Which piece of data is most important to collect?

The difference between their heights

The weight of each basketball

The distance they stand from the hoop

The percentage of shots they make

Question 4

4.

Al and Dan go sledding on a hill in their neighborhood, and ask the question What happens to sled speed when we start lower or higher on the hill? Which list below describes important variables to control to make sure the test is fair?

height where sledder starts, number of jumps, temperature outside

amount of snow, color of the sled, speed of sled

weight of sledder, type of sled, amount of snow

Question 5

5.

Farmer Bob wants to grow the largest pumpkins possible. He decides to conduct an experiment to see: What quantity of compost results in the largest pumpkins? He plants three rows of pumpkin seeds for the experiment. Which of these experiment set-ups should he choose?

Add one inch of compost to row #1, one inch of chemical fertilizer to row #2, and one inch of chicken manure to row #3.

Add no compost to row #1, one inch of compost to row #2, and two inches of compost to row #3.

Add compost to all three rows equally, then water row #1 once a week, row #2 twice a week and row #3 every day.

Question 6

6.

Erin wants to know "Will my science students score better on a quiz before lunch or after lunch?" Which of these hypotheses would be a logical prediction to her question?

If students take a quiz after lunch, they may get sleepy.

If students want to do well on a quiz, they should study the night before.

If students take a quiz right before lunch, they will perform worse than students taking the quiz after lunch.

Question 7

7.

Carmen wants to test the relationship between playing video games and kids' athletic skills. She hypothesizes: If kids play more than an hour of video games per day, they will make more soccer goals out of 3 attempts. Which piece of background research would best support her hypothesis?

A 2013 study shows that students who play role-playing games improve their visual and spatial skills.

Research finds that kids who play social games like Farmville have higher collaboration skills.

A Harvard study finds a connection between playing violent video games and aggressive behavior.

Mark Rober cites that playing a video game, like Mario, can help people persevere through failure.

Question 8

8.

Ben wants to know: Do middle schoolers study better at night or in the morning?" He finds a one-minute math facts quiz online. He asks his friend Lisa to take the quiz once in the evening, and asks his sister Nina to take it in the morning. Lisa gets 15 right and Nina only gets 8 right, so he concludes that evening is a better time to study. Is this conclusion accurate?

Yes, because he included quantitative data.

Yes, because he made sure that they each took identical tests.

No, because he didn't control for what time of day they took the test

No, because he didn't control for whether Lisa and Nina have different math skills.

Question 9

9.

Jamie wants to know: Do middle schoolers work harder solo or in pairs? She creates a challenging puzzle with ten steps. Choose which experimental set-up will answer the question best.

Give the puzzle to 1 individual and 1 pair.  Record how many steps they complete before giving up.  Take the results and compare.

Give the puzzle to 5 individuals and 5 pairs.  Record how many steps they complete before giving up.  Average the results for each and compare.

Give the puzzle to 5 individuals and 5 pairs.  Record their conversation and analyze it to decide which people sounded like they were working hard.

Question 10

10.

Kaleb is making chocolate chip cookies, and decides to use the scientific method to answer, "How does the amount of sugar effect the chewiness of cookies?" He makes one batch with 1/2 cup of white sugar, one batch with 1 cup of white sugar and another batch with 1 1/2 cups of brown sugar. What mistake did he make?

He needed to control the temperature of the oven

He needed to use the same amount of sugar in each batch

He needed to change the amount of chocolate chips to match the sugar

He needed to use the same type of sugar in each batch

Question 11

11.

Sonja bakes cupcakes. She finds that they always gets a little bit burnt on the bottom and asks for your help to figure out why. Write a hypothesis to guide her next experiment. My hypothesis is that if....