Problem 10
What's the difference between an independent variable and a dependent variable?
Problem 11
Which types of questions can be answered using scientific methods?
Problem 11
Which word means an educated guess? A) theory B) hypothesis C) variable D) law
Problem 12
What can scientists do to ensure that they perform experiments objectively?
Problem 12
The idea that a comet is like a dirty snowball is which of the following? A) hypothesis C) law B) variable D) theory
Problem 13
Why is it a good idea to repeat an experiment?
Problem 13
Which of the following is the first step in using scientific methods? A) develop hypotheses B) make conclusions C) test hypotheses D) identify a problem
Problem 14
Would a scientist be convinced that his or her results were accurate after one trial? Why or why not?
Problem 14
The statement that an object at rest will remain at rest unless acted upon by a force is an example of which of the following? A) hypothesis C) law B) variable D) theory
Problem 15
Which of the following questions could NOT be answered using scientific methods? A) Should lying be illegal? B) Does sulfur affect the growth of grass? C) How do waves cause erosion? D) Does land heat up faster than water?
