Question

6 multiple choice 2 points which statement best describes a scientific theory? it is a collection of data designed to provide support for a prediction. it is an educated guess that can be tested by experimentation. it is a scientific fact that no longer requires any evidence to support it. it is a general statement that is supported by many scientific observations. 7 multiple choice 2 points an experiment is described below. a large field at the base of a mountain becomes flooded when heavy rains in the mountains cause a stream to overflow. each time the flooding occurs, more soil washes away. the owners of the land want to perform an experiment to see if different types of plants could help reduce the soil erosion. they choose five areas of ground that are the same size, the same distance from the stream, have the same slope and the same kind of soil, and receive the same amount of sunlight. the type of plant planted in each area is different for each of the five areas. measurements of soil erosion will be made each time flooding occurs. the results will be compared after six months. which hypothesis is being tested in this experiment? soil erosion is affected by the strength of the wind. flooded areas have greater soil erosion than areas that are not flooded. some types of plants reduce soil erosion more than others. some types of soil are more easily eroded.

Explanation:

• For question 6: A scientific theory is a well - supported general statement. It is not just a collection of data (data collection can be part of supporting a theory but not the definition), an educated guess (that's a hypothesis), or a fact that needs no evidence (science is always open to new evidence).
• For question 7: The experiment is about different types of plants and soil erosion. The variables controlled are size of area, distance from stream, slope, soil type, and sunlight. The independent variable is the type of plant. So the hypothesis is about how different plant types affect soil erosion.

Answer:

1. It is a general statement that is supported by many scientific observations.
2. Some types of plants reduce soil erosion more than others.