Analyzing Data — Unit test Answers

Gerard lives in a tropical region where the average annual temperature is 77°F and the average annual rainfall is more than 100 inches a year. He surveys 25 people in his neighborhood about items they regularly use and records the data into a table.

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What are hypotheses partially based on?

The theory of plate tectonics states that the outer layer of Earth is divided into large, rigid blocks called plates. What could happen that may lead to a change in this theory?

A student asks, "How does exercise affect an individual’s heart rate?" Which step can the student complete to best help her answer the question through scientific inquiry?

The scientist Konstantin Mereschkowsky knew in the early 1900s that plants make their own food by using sunlight. He also saw tiny parts in plants called chloroplasts that do not appear in any animals. He hypothesized that chloroplasts are what help plants make food. After many more observations of all types of plants and animals, scientists are convinced today that chloroplasts make food for plants.

Students from a high school science class visited the desert of Southern California and investigated a sample of sedimentary rock from the region.Which question can they answer through scientific investigation?

Which data can be measured quantitatively?

Which statement best describes a difference or similarity between a comparative investigation and an experimental investigation?

Boyle's law states that the pressure of a gas tends to increase as the volume of the container holding the gas decreases.Which explains why this is a law rather than a theory?

What does the prefix pseudo mean in the word pseudoscience?

Which component does a descriptive investigation include?

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Scientists once believed that protons, electrons, and neutrons were the smallest particles of matter. Now they believe that these particles are made of even smaller particles.Which statement gives one of the reasons the original belief was a theory?

In the 1700s, Isaac Newton determined that the force of gravity between two objects depends on the mass of the objects and distance between them. He reasoned that things fall toward Earth because it has so much mass. Then in the 1900s, Albert Einstein worked with new discoveries, such as the fact that light always travels the same speed, and he determined a new explanation of how and why gravity works. Mass and distance still matter in Einstein’s explanation, but speed also matters. Newton’s explanation still works for objects close to Earth, but Einstein’s explanation works for all of the objects in the universe.