The Nature of Science

The knowledge that covers general truths or the operation of general laws, especially when acquired and tested by the scientific method is known as 

• a theory
• science
• a variable
• a hypothesis

What's the difference between a hypothesis and a theory?

• "Theory is another word for "fact"; hypothesis is another word for "guess".
• Hypothesis can't be proven; theories can.
• Theories have been confirmed through tests; hypotheses haven't.
• Theories contain many hypothesis; a hypothesis only contains one theory.

If you were running an experiment to determine the temperature at which beans sprout the fastest, what would be the variable?

• The number of beans you plant
• The height of the sprouts you grow
• The amount of water you give the beans
• The temperature at which each bean is kept

What might cause a theory to change over time?

• New laws passed by the government
• New but untestable ideas
• Changes in public opinion
• The discovery of new evidence

Evolution is one example of a theory. From what you know about the scientific method, what can you conclude about this theory?

• It's been tested many times.
• Scientists don't need to test it anymore.
• No one is allowed to test whether it's true or not.
• There is very little evidence to support it. 

Which of the following is a testable hypothesis?

• Roses are more beautiful than violets.
• A plant needs at least five hours of sunlight per day to grow.
• Ice cream is delicious.
• Humans will someday land on Mars. 

Indepenent variable is:

• the one being manipulated
• constant
• being influcenced
• the variable we have no control over

Variable that changes because of the manipulation is:

• dependent
• independent
• control
• confounding

True or False: A hypothesis must be stated in a way that is falsifiable.

• True
• False

What is qualitative?

• Using your 5 senses
• Using dice
• A store
• A place