1st 9 Weeks 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

There are 12 cows in the field.

• Qualitative data
• Quantitative data

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

Tags

NGSS.MS-PS1-2

What is a control group in an experiment?

• a group in an experiment that remains unchanged for purpose of comparison (missing the IV)
• a group in an experiment that changes to compare the IV and DV variables
• the manipulated group
• the group that is altered

What 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. 

490,000 g =____ kg

• 490
• 49
• 4,900
• 0.49

Tags

CCSS.4.MD.A.1

2,000 cm = _____ m 

• 200
• 20
• 400
• 5,000

Tags

CCSS.2.MD.A.2

Which lab tool might you use to measure the volume of a liquid?

• electric scale
• bunsen burner
• test tube
• graduated cylinder

What is the formula for density?

• density = mass x volume
• density = mass / volume
• density = mass + volume
• density = mass - volume

Why do ice cubes float in a  glass of water?

• the ice cubes are more dense than the water
• the water is more dense than the ice cubes
• the water is more dense than the glass
• the ice is more dense than the glass