Multiple Choice
Identify the
choice that best completes the statement or answers the question.
|
|
|
Dr. Newell had a problem with chewing gum under the desks in his
classroom. Kids had been hiding their chewed up gum under them for years. He finally
decided that it was time to do something about the problem, so he banned chewing gum from his
classroom permanently. He also needed to clean up the gum that was already under the desks. He
had been using plain soap and water to clean the desks for years, but another teacher recently told
him about a powerful new cleaner called GumBeGone that he found on the Internet. The
product’s manufacturer claimed that it would dissolve gum in less than 10 seconds. Dr.
Newell decided to to set up an experiment to test whether GumBeGone was better than plain soap and
water at removing chewing gum from desks. He took all his desks outside and turned them over so
he could get at the gum more easily. He divided the desks into two groups--Group A was cleaned
with GumBeGone and Group B was cleaned with plain soap and water. He had his assistant, Dr. E.
Ville, measure and record how long it took to remove each wad of gum.
|
|
|
|
|
|
|
1.
|
Which group is the control group in this experiment?
a. | Group A | c. | Dr. Newell and Dr. E. Ville | b. | Group
B | d. | The kids who chewed gum
in class |
|
|
|
|
|
|
|
2.
|
Which group is the experimental group?
a. | Group A | c. | Dr. Newell and Dr. E. Ville | b. | Group
B | d. | The kids who chewed gum
in class |
|
|
|
|
|
|
|
3.
|
What is the independent variable?
a. | chewing gum | c. | soap and water | b. | GumBeGone | d. | Dr. Newell |
|
|
|
|
|
|
|
4.
|
What is the dependent variable?
a. | GumBeGone | c. | Chewing gum removed faster | b. | Soap and
Water | d. | scrambled
eggs |
|
|
|
|
|
|
|
5.
|
Sometimes in an experiment, it is necessary to tell participants that they are
getting something special (such as a new medicine) when actually they are getting a
“fake” treatment that looks like the real thing. What is such a treatment
called?
a. | The Placebo Effect | c. | Dishonesty | b. | The Psycho Effect | d. | A hypothesis |
|
|
|
|
|
|
|
6.
|
What do we call the group that receives a “fake” treatment as
described in question 5?
a. | losers | c. | control group | b. | experimental group | d. | scientists |
|
|
|
|
|
|
|
7.
|
Which is longer, a decameter or a decimeter?
|
|
|
|
|
|
|
8.
|
How many grams are in a kilogram?
a. | 100 | c. | 1,000 | b. | 10 | d. | 1,000,000 |
|
|
|
|
|
|
|
9.
|
What instrument would we use to measure the mass of a gold nugget?
a. | graduated cylinder | c. | balance | b. | spring scale | d. | meter stick |
|
|
|
|
|
|
|
10.
|
If we are using a scale, we are measuring the force of gravity acting on an
object. In other words, we are measuring the object’s
a. | volume | c. | temperature | b. | mass | d. | weight |
|
|
|
|
|
|
|
11.
|
One thousandth of one gram is a
a. | microgram | c. | milligram | b. | megagram | d. | decigram |
|
|
|
|
|
|
|
12.
|
Randy wants to measure the length of his cell phone. What units would be
best for this measurement?
a. | centimeters | c. | kilometers | b. | meters | d. | grams |
|
|
|
|
|
|
|
13.
|
The temperature scale used in the metric system is the_______________
scale.
a. | Fahrenheit | c. | spring | b. | Celsius | d. | Richter |
|
|
|
|
|
|
|
14.
|
One of the most popular events in track and field is the 100-meter dash.
Another name for this event could be the ________________ dash.
a. | kilometer | c. | hectometer | b. | decameter | d. | centimeter |
|
|
|
|
|
|
|
15.
|
An educated guess about the answer to a problem is called a
a. | hunch | c. | diploma | b. | possibility | d. | hypothesis |
|