Weathering and Erosion

Question 1

Did you read the Student Guide carefully?

Revolt · Accepted Answer

yes

Question 2

Which of the following did you include in your question? Check all that apply.

Revolt · Accepted Answer

independent variables: factors such as acidity, temperature, surface area, and mineral composition; dependent variable: percentage of mass remaining

Question 3

The independent variables, the ones that are intentionally manipulated, are .

Revolt · Accepted Answer

temperature, acidity, mineral composition, and surface area

Question 4

Question 4

Revolt · Accepted Answer

98.0

Question 5

Four different samples of sandstone were treated with water for 2 hours. The percentage of mass remaining for each sample is shown in the table. Which sample had the slowest rate of weathering?

Revolt · Accepted Answer

Sample Y

Question 6

Which statements are part of the safety protocol for this lab experiment? Check all that apply.

Revolt · Accepted Answer

Wear appropriate clothing for this activity (safety goggles, apron, gloves, and so on).; Behavior must be purposeful.; Wash hands thoroughly after handling all lab materials.; Report all accidents to the teacher.

Question 7

Which of the following did you include in your hypothesis? Check all that apply.

Revolt · Accepted Answer

The “if” part of the hypothesis refers to mineral composition, temperature, acidity, and surface area.; The “then” part of the hypothesis refers to a measureable difference in the percent of mass remaining.; The “because” portion of the hypothesis connects weathering to chemical processes.

Question 8

The dependent variable, the one you measure the response in, is .

Revolt · Accepted Answer

percentage of mass remaining

Question 9

Question 9

Revolt · Accepted Answer

94.7

Weathering and Erosion Answers

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