Evaluating Scientific Explanations — Unit test Answers

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The list shows the results of six athletes competing in the long jump, which has a target distance of 20 feet.12 feet, 11 feet, 13 feet, 10 feet, 20 feet, 12 feet

Lila is using a Bunsen burner. She has all of her chemicals on her workstation. Which would be the best lab practice?

Which feature of a hypothesis leads to a new experiment?

Which tool can be used to measure the volume of liquid?

Which model is most likely used to predict a future event?

Which describes the correct procedure when converting a number from scientific notation to standard notation?

The statements in the table summarize what Johannes Kepler stated in the early 1600s about the motion of planets.Kepler’s StatementsThe orbit of a planet around the sun is an ellipse.As a planet orbits the sun, a line between the planet and the sun sweeps out equal areas during equal periods of time.There is a mathematical relationship between the time it takes a planet to orbit the sun and the average distance the planet is from the sun.Over the last four hundred years, predictions based on his statements have proven true. Which best describes Kepler’s statements?

Petra dropped her beaker on the floor. She placed her gloves on the table. She then started to pick up the small pieces with her hand and place them in the broken-glass container. At the end of lab, she told her instructor that there was broken glass on the floor. The teacher swept it up and placed the glass in the broken-glass container.Aside from dropping the beaker, how many errors did Petra commit?

The table shows results of an experiment that was replicated.

Scientists often work on projects for a long time and fail to see sources of error in their research. Which process allows an outside expert to look at the scientist’s project and point to sources of error?

How does a scientist use creativity?

What is 0.000345 expressed in scientific notation?

Luther accidentally spilled his chemicals, and they splashed onto his arm and legs. Which piece of equipment should he use?

Which statement best describes how an existing theory is often affected by the development of new technology?