Review: CP_Unit 1 - Science Practices Test

A cow is given a growth hormone and then compared to another cow that was not given a growth hormone. Both cows were weighed at 2 years. Dependent variable:

• growth hormone
• weight

Mosquito repellent is sprayed on one arm and the other arm is not sprayed. The number of mosquito bites is counted after 2 hours. Dependent variable:

• presence of mosquito repellent
• number of bites

One grape is placed in tap water and another grape is placed in salt water. The change in their mass is measured after a day. Independent variable:

• type of water
• mass of grape

Tags

NGSS.MS-PS1-2

Pillbugs are placed in a container where they have a choice of a wet or a dry environment. Researchers record how much time was spent on each side Independent variable:

• wet or dry environment
• time spent on each side

Tags

NGSS.MS-LS2-1

A stapler is used to staple 100 papers, it jams 5 times during the trial. A different brand of stapler performs the same test; it jams 22 times. The number of jams is the...

• independent variable
• dependent variable

In a scientific experiment, a researcher wants to investigate the effect of temperature on the growth of plants. Dependent Variable:

• The growth of plants
• The temperature

Tags

NGSS.MS-LS1-5

Person sets out to see if the higher the temperature of the air in the oven, the faster a cake will bake. Dependent variable:

• temperature
• time of cake to bake

Tags

NGSS.HS-PS1-5

Based on the image:; Which is more dense: mineral oil or paraffin wax?

• mineral oil
• paraffin wax

Tags

NGSS.MS-PS1-2

Substance A has a mass of 12.5 grams and a volume of 20.0 mL. Calculate the density of substance A in grams/mL

• 0.625
• 1.6
• 250

What is the mass of an aluminum block that has a density of 2.7 g/cm^3; and volume of 10. cm^3? (grams)

• 0.27
• 3.70
• 27