Please In an experiment or investigation, what is a control? (1 point)
O The variable that changes other variables in the experiment.
O The variable that remains unchanged throughout the investigation.
O The variable that the experimenter controls or changes

Why would a scientist most likely chose to perform a simulation instead of a lab experiment or field
observation? (1 point)
O Field observations are less accurate than computer simulations.
O The lab experiment might be dangerous or too difficult to do.
O Simulations are more accurate than lab work.
O Simulations rely on mathematics analyze and have one correct answer

What are the four types of terrains that the Water Erosion simulation explored? (1 point)
o rocky, glacial mountain, near water body, and desert
o rocky, glacial mountain, hills and plains, and desert
o rocky, glacial mountain, hills and plains, and near water body
o glacial mountain, hills and plains, near water body, and desert

Which river channel results from a high-gradient, high-volume river flow? (1 point)
O straight with a wide channel
O sediment transportation and gradual bifurcation of the river
O narrow, meandering channel
shallow with a braided channel

Which effect does temperature have on the glacial mountain terrain? (1 point)
O Low temperatures increase erosion by creating more glaciers.
O High temperatures melt glaciers faster and cause erosion to decrease.
O Temperature has no effect on glacial mountains.
O High temperature melts glaciers