Question

1. amber explores the effects of increased temperature on the air inside a balloon. which of the following is the dependent variable in the experiment? a. size of the balloon b. temperature of the air c. difference in balloon sizes d. difference in air temperatures 21. emily proposes an idea. she performs experiments and tests the idea repeatedly. other scientists test the idea repeatedly and achieve the same results. the idea gains acceptance among scientists. what is this idea now called by the scientific community? a. conclusion b. hypothesis c. law d. theory 22. andrew and maria are investigating the cycling of nutrients in the ocean. they learn that winds can cause deep, cold water to move to the surface during a process called upwelling. these waters contain more nutrients than the waters they displace. the diagram below shows the model andrew and maria are building of upwelling. how should they label b in their model to represent what they have learned? a. cold water with few nutrients b. cold water with many nutrients c. warm water with few nutrients d. warm water with many nutrients

Explanation:

1. In an experiment exploring the effects of temperature on air in a balloon, the size of the balloon changes depending on the temperature, so it is the dependent variable.
2. When an idea is proposed, tested repeatedly by multiple scientists and gains acceptance, it is called a theory. A hypothesis is an initial proposed explanation, a law is a well - established description of a natural phenomenon, and a conclusion is based on a single set of experiments.
3. During upwelling, deep, cold water with many nutrients moves to the surface. The water that is displaced (labeled B) is warm water with few nutrients.

Answer:

1. A. size of the balloon
2. D. theory
3. C. Warm Water With Few Nutrients