Unit 1/2 Review: Representing Motion

Which of the following is not one of the 9 processes of science?

• Assume

• Hypothesize

• Test

• Communicate

How is a theory different from a law?

• A theory is someone's opinion, while a law is fact

• A theory is a well tested scientific hypothesis, while a law is a relationship between the variables in a natural system

• A theory is an educated guess, while a law offers an explanation for observed phenomena

• They are the same thing

Which of the following would be considered correct lab safety procedures

• Connecting wires to a circuit on a wet counter

• Wearing appropriate clothing and safety gear

• Rushing to get all of the best equipment

• Pouring chemicals down the sink

Convert the following to meters:

15,000 km

• 15,000,000 meters

• 1500 meters

• 150,000 meters

• 150,000,000 meters

Convert the following to meters:

100 mm

• .00001 meter

• .1 meter

• 1.0 meter

• 1 x 10^-6 meters

A series of steps designed to help you solve problems and answer questions is also known as ___________________.

• a hypothesis

• an observation

• making inferences

• the scientific method

Which of the following is considered a vector? Select all that apply

• Temperature

• Speed

• Velocity

• Force

Which of the following is not a standard SI unit?

• Power

• Watts

• Meters

• Joules

Select the correct definition:

Average Speed

• The distance traveled divided by the time taken to travel that distance; for uniform motion, it is the absolute value of the slope of the object's position-time graph

• The ratio of an object's change in position to the time interval during which the change occurred; for uniform motion, it is the slope of the object's position-time graph

• A system used to describe motion that gives the zero point location of the variable being studied and the direction in which the values of the variable increase

• A change in position having both magnitude and direction; is equal to the final position minus the initial position

Select the correct definition:

Instantaneous Position

• The ratio of an object's change in position to the time interval during which the change occurred; for uniform motion, it is the slope of the object's position-time graph

• A change in position having both magnitude and direction; is equal to the final position minus the initial position

• The distance traveled divided by the time taken to travel that distance; for uniform motion, it is the absolute value of the slope of the object's position-time graph

• The position of an object at any particular instant in time