EFHS -- methods of science

Grandma walked across the street to visit her neighbor, then she walked down the street to the store.  She returned home sometime later with her groceries after walking a total of 1 mile.  What was her displacement? 

• 0

• 1 mile

• 2 miles

• 0.5 miles

How do most scientific investigations begin?

• The analysis of experimental data is used to draw conclusions, which will be published in a peer-reviewed scientific journal.

• An observation of an event in the natural world causes a scientist to ask a question.

• The results of years of research provide scientists with enough information to draw a conclusion.

• A model is developed to help scientist visualize the process being studied.

A well-organized procedure that tests an idea is known as _____.

• a theory

• an experiment

• a data table

• a lab survey

What occurs when the expectations of the scientist change the way the results of an experiment are viewed?

• experimentation

• a theory

• a conclusion

• bias

In a lab experiment, students drop different objects from the same height above the ground and measure the time it takes for the objects to hit the ground.  What is the constant in this experiment?

• throwing some objects but dropping others

• the variety of objects

• the different falling times of the objects

• the same height above the ground

Which of the following questions cannot be answered by science?

• How does a clock work?

• Is this a good song?

• How do birds fly?

• What is an atom?

A student misses the school bus every morning by showing up to the bus stop exactly 6 minutes after the bus has passed.  What is the student’s problem?

• The student is not precise or accurate

• The student is accurate, but not precise in his arrival at the bus stop.

• The student is precise, but not accurate in his arrival at the bus stop.

A hypothesis is a _______ explanation for a phenomenon in the natural world.

• testable

• random

• variable

• conclusive

What would cause a scientific theory to be changed?

• updated software

• new information and better technology

• a change in the social culture, accepting different opinions

• younger smarter scientists

Which term includes direction of motion?

• Distance

• Displacement