NOS Quiz Review

Sabrina wants to test which brand of popcorn pops the most kernels. She picked a Giant Eagle 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

Which of the following is a quantitative observation?

• The bird is very colorful.

• The bird has four different colors.

• The bird has many, many feathers.

• It is a bird.

Which of the following is a qualitative observation about this image?

• There are 10 mini trees in the picture.

• There are two colored bushes in the picture.

• There is one power line going across in the air.

• There is art created from trees in this photo.

What is the first step in the scientific method?

• Make an observation

• Design and conduct an experiment

• Make a hypothesis

• Share your results

Following the scientific method, which step comes after Ask a Question?

• Record your results

• Design and perform an experiment

• Form a hypothesis

• Share your results

An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, which of the following is NOT one of the experimental constants?

• Type of liquid

• Type of plant

• Amount of music

• Sunlight

An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, what is the independent variable?

• Type of plant

• Amount of sunlight

• Type of music

• Type of liquid

**THIS QUESTION HAS MULTIPLE ANSWERS**

Select all of the answers that fall under the following category:

ways to tell whether or not a source of information is reliable

• Examining the source for an author name and date

• Examining the source for citations

• Looking over the information and deciding whether or not you agree with it

• Checking whether the source is primary or secondary

• Examining the site's URL for .edu and .gov

What is the formal name for the series of steps used by scientists to solve a problem or answer a question?

• scientific method

• method of experimentation

• data collection

• explanation