Chapter 2 Studyguide
The metric system of measurement is based on the number
a. | 1. |
b. | 10. |
c. | 12. |
d. | 100. |
The basic unit of length in the metric system is the
a. | foot. |
b. | meter. |
c. | mile. |
d. | kilometer. |
How many meters are there in a kilometer?
a. | 10 |
b. | 100 |
c. | 1,000 |
d. | 10,000 |
The kilogram is the basic metric unit of
a. | length. |
b. | mass. |
c. | weight. |
d. | volume. |
Mass and weight are different because
a. | mass depends on the force of gravity. |
b. | weight depends on the force of gravity. |
c. | weight depends on the amount of matter an object contains. |
d. | mass does not depend on the amount of matter an object contains. |
The amount of space an object takes up is its
a. | volume. |
b. | density. |
c. | mass. |
d. | length. |
If a shoe box measures 6 cm high, 7 cm wide, and 20 cm long, what is its volume?
a. | 420 cm |
b. | 420 cm3 |
c. | 840 cm3 |
d. | 840 cm |
The SI unit of time is the
a. | second. |
b. | minute. |
c. | hour. |
d. | day. |
The SI unit of temperature is the
a. | metric degree. |
b. | degree Fahrenheit. |
c. | degree Celsius. |
d. | kelvin. |
You measure the length of a string three times and get values of 34.0 cm, 34.1 cm, and 34.2 cm. The actual length is 39.0 cm. What can you say about your measurements?
a. | They are accurate but not precise. |
b. | They are precise but not accurate. |
c. | They are both accurate and precise. |
d. | They are neither accurate nor precise. |
The significant figures in a measurement include
a. | only the digits that have been measured exactly. |
b. | the digits that have been measured exactly, plus one digit whose value has been estimated. |
c. | only the digit whose value has been estimated. |
d. | only the last digit in a measurement. |
What does a line of best fit emphasize?
a. | the individual data points |
b. | the overall trend of the data |
c. | data points that fall along a line |
d. | the slope of a line |
What does it most likely mean if a graph shows no identifiable trends?
a. | There are more than two variables. |
b. | The graph has no use or value. |
c. | There is no relationship between the variables. |
d. | There is a strong relationship between the variables. |
The most important lab safety rule is
a. | always wear a lab apron. |
b. | always wear safety goggles. |
c. | design and conduct your own experiments without asking your teacher. |
d. | always follow your teacher’s instructions and textbook directions exactly. |
What are some reasonable safety precautions for field investigations?
a. | None; there are no hazards in the field. |
b. | Always wear goggles and aprons. |
c. | Be prepared and use common sense. |
d. | Always go into the field alone. |
What is the first thing you should do if an accident occurs?
a. | Find the emergency equipment. |
b. | Notify your teacher. |
c. | Go to the nearest hospital. |
d. | Start first aid treatment. |
True False
SI is a version of the metric system. _________________________
To measure objects smaller than a meter but still visible to the unaided eye, scientists would use the centimeter or kilometer. _________________________
A(n) millisecond is one-thousandth of a second. _________________________
A scientist would most likely use the Kelvin scale to measure daily temperature. _________________________
Safety symbols alert you to possible dangers and identify safety equipment you should use. _________________________
When you do field work, you should never tell an adult where you will be. _________________________
If an accident occurs, you should immediately notify the fire department. _________________________
Completion
Each unit in the SI system is ____________________ times larger than the next smallest unit.
A common tool used to measure length is the ____________________.
A balance is used to measure ____________________.
The curve on the surface of water in a graduated cylinder is called a(n) ____________________.
A clock is used to measure ____________________.
Temperature is measured using a(n) ___________________.
Whenever you perform a lab, your chief concern must be ____________________.
Just as in the lab, safety is also important when doing activities in the ____________________.
You should make sure you know the ____________________ and use of safety equipment in the lab.
The kelvin is the official SI unit for ____________________.
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