EFHS -- methods of science

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.

Tags

NGSS.HS-LS3-1

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

• a theory

• an experiment

• a data table

• a lab survey

Tags

NGSS.MS-ETS1-3

NGSS.MS-ETS1-4

When the expectations of the scientist influence how the results re 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 hypothesis is a _______ explanation for a phenomenon in the natural world.

• testable

• random

• variable

• conclusive

Tags

NGSS.HS-PS1-2

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

A way of explaining things based on what has been learned from many observations and investigations.

• Theory

• Hypothesis

• Experiment

• Variable

Tags

NGSS.HS-PS1-2

NGSS.HS-PS2-1

Sometimes scientists can't see everything they are testing. They might be studying something too large or too small to see. The solution is -----

• Repeat the scientific method.

• Formulate a hypothesis to test the theory.

• Design a new experiment.

• Construct a model of the system or idea.

A factor that can cause a change in the results of an experiment.

• hypothesis

• variable

• measurement

• control

Tags

NGSS.MS-PS1-2

NGSS.MS-PS2-2