Benchmark 2 Practice Test

1. If you bake cakes at a higher temperature, then they will bake faster. What is the INDEPENDENT VARIABLE?

• the oven
• the temperature of the oven
• the flavor of cake
• the time it will take to bake the cake

2. If you travel up a mountain, then you will notice a decrease in temperature? What is the DEPENDENT VARIABLE?

• the distance traveled
• the height of the mountain
• the temperature
• the means of transportation

3. The students conducted an experiment in science class to answer the question, "Which brand of paper towel absorbs the most water?" The paper towel is the _________________ in the experiment?

• independent variable
• dependent variable
• constant
• control group

4. All weather occurs in which layer of the atmosphere?

• stratosphere
• troposphere
• thermosphere
• exosphere

5. The natural ozone layer that protects us from the sun is found in the

• stratosphere
• mesosphere
• ionosphere
• troposphere

6. Which gas does the X represent on the pie chart?

• carbon dioxide
• argon
• oxygen
• nitrogen

7. Which layer protects the Earth from incoming meteors?

• stratosphere
• mesosphere
• thermosphere
• lithosphere

8. Which layer of the atmosphere is the hottest?

• stratosphere
• troposphere
• thermosphere
• mesosphere

9. Which of these is an example of conduction?

• a heater warming a room
• burning your hand on a hot stove
• feeling the warmth from the sun on your skin
• heat from a campfire

10. In order for heat to be transferred through conduction, two objects must be-

• the same mass
• right next to each other
• the same temperature
• making direct contact with each other