Free Printable Scientific Skills #5

Worksheets

Scientific Skills #5

Total questions: 12

Worksheet time: 17mins

Name

Class

Date

A student hypothesized that robins prefer large birdhouses to small ones. He build four birdhouses of different sizes to test his hypothesis. What was the independent variable in the students study?

The size of the birdhouse

The number of birds in the house

The location of the birdhouse

The season of the year

Sabrina wants to test which brand of popcorn pops the most kernels. She picked a store brand, Orville Redenbacher, and PopSecret. All three bags started with the same number of kernels. She popped each for 3 minutes in the same microwave, and then counted the number of kernels left over. What is her independent variable?

Number of kernels left over

Brand of popcorn

number of kernels before popping

length of time cooking

Kira wants to test which type of soda creates the biggest foam explosion when adding a Mentos candy. She chose Sprite, Coke, and Mountain Dew. One at a time, she added a single Mentos candy and measured the height of the foam eruption. Mountain Dew created a foam eruption of 7 inches. Coke and Sprite tied at 5 inches. What is her dependent variable?

Brand of soda

Number of mentos candies used

Height of foam eruption

Temperature of soda

The __________ variable is located on the y-axis.

Independent

Dependent

Control

Constant

When scientists collect data that is measurable with numbers, we call it...

qualitative data

quantitative data

hypothetical data

graphing data

A student wants to test the effects of type of exercise on heart rate. What is the dependent variable?

heart rate

type of exercise

amount of exercise

time of day exercise occurs

What is the volume of the fish?

18.0 mL

6.0 mL

38.0 mL

How many students have more than 1,000 songs on their MP3 player?

What is the difference between the number of frogs in the pond when the rainfall was 5cm and when the rainfall was 20cm?

10.

Vicky completed an investigation into the amount of bacteria on a plate. She calculated the average (mean) amount to be 68.25252525. What is this value to 3s.f.?

68.3

68.25

68.2

11.

Sangat completed an investigation into the amount of CO₂ released by a reaction. His results were: 8.0cm³, 8.0cm³ and 9.0cm³. He calculated the average (mean) to be 8.6666667cm³. What is the answer with the correct level of accuracy?

8.7cm³

8.6cm³

9cm³

8.67cm³

12.

Neil completes an investigation in to electrical resistivity - he records his results as: 8.8A; 8.9A; 9.0A; and 8.8A. He calculates the average to be be 8.875A. What is the result to the correct level of accuracy?

8.875A

8.88A

8.9A

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Scientific Skills #5

Total questions: 12

Worksheet time: 17mins

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