In which step of the scientific method is information obtained through the senses?

• a. drawing conclusions

• b. making observations

• c. analyzing data

• d. revising a hypothesis

What happens when the data in an investigation do not support the original hypothesis?

• a. The scientist gives up and starts an investigation on a new topic.

• b. The data must be incorrect and are thrown out.

• c. The hypothesis is revised.

• d. The data are altered so that they support the original hypothesis.

What is a statement that summarizes a pattern found in nature?

• a. scientific law

• b. a fact

• c. a hypothesis

• d. a scientific theory

Which of the following statements is true about scientific theories?

• a. Scientific theories become scientific laws.

• b. Scientific theories are never proven.

• c. Scientific theories become hypotheses.

• d. Scientific theories summarize patterns found in nature.

What is a physical or mental representation of an object or an event?

• a. theory

• b. a model

• c. a hypothesis

• d. a scientific law

What are 6 centimeters equal to?

• a. 600 meters

• b. 6 of a millimeter

• c. 60 millimeters

• d. 600 millimeters

Which of the following conversion factors would you use to change 18 kilometers to meters?

• a. 1000 m/1 km

• b. 1 km/1000 m

• c. 6 of a millimeter

• d. 1 km/100 m

Timers at a swim meet used four different clocks to time an event. Which recorded time is the most precise?

• a. 55.25 s

• b. 55 s

• c. 55.254 s

• d. 55.2 s

This graph represents a ____ relationship.

• a. direct

• b. indirect

6.5 mm = ____ cm

• a. 65

• b. 0.65

• c. 650

• d. 0.065