Ch. 1 Physical Science practice
Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
____1.The correct symbol for the SI unit of temperature is ____.
a. / ºC / c. / Kb. / ºF / d. / s
____2.How many meters are there in 1,865 cm?
a. / 0.1865 / c. / 18.65b. / 1.865 / d. / 186.5
____3.One benefit of the SI system is that it is ____.
a. / based on units of 100 / c. / based on multiples of tenb. / not used to measure temperature / d. / not used in the United States
____4.A box is 25 cm long, 6 cm wide, and 4 cm high. How many cubic centimeters of water can it hold?
a. / 600 / c. / 150b. / 25 / d. / 24
____5.When designing an experiment, the first step is to ____.
a. / analyze the data / c. / state a hypothesisb. / list a procedure / d. / state the problem
____6.An idea, event, or object can be represented by a ____ to help people better understand it.
a. / constant / c. / lawb. / hypothesis / d. / model
____7.A standard for comparison that helps to ensure that the experimental result is caused by the condition being tested is the ____.
a. / constant / c. / dependent variableb. / control / d. / hypothesis
____8.The application of scientific knowledge to help people is ____.
a. / a discovery / c. / pure scienceb. / a hypothesis / d. / technology
Matching
Match each item with the correct statement below.
a. / milli- / g. / kilogramb. / kilo- / h. / cubic centimeter
c. / centi- / i. / meter
d. / mass / j. / dependent variable
e. / kelvin / k. / SI
f. / second
____9.amount of material in an object
____10.SI unit of length
____11.worldwide system of measurement
____12.SI unit of temperature
____13.SI unit of mass
____14.derived unit of volume
Short Answer
15.A "cubit" is the distance from your elbow to the end of your middle finger. Describe the problem that will occur if your friend measures a table in cubits and you measure a door opening in cubits to see if the table will fit.
16.Describe two advantages of the worldwide use of SI.
17.Sequence the following steps: scientific law, problem, theory, hypothesis, experiment.
Figure 1-3
18.Use the graph in Figure 1-3 to find the number of grams of sugar that will dissolve in 100 grams of water at 80ºC.
19.Use the graph in Figure 1-3 to find the temperature, in Celsius, that will dissolve 300 g of sugar in 100 g of water.
20.What type of graph is shown in Figure 1-3?
21.Use the graph in Figure 1-3 to find the temperature, in kelvins, that will dissolve 400 g of sugar in 100 g of water.
Problem
22.A small stone dropped into a graduated cylinder causes the water level in the cylinder to rise from 18 mL to 22 mL. What is the volume of the stone?
23.What is the density of the acid in a car battery if 200 mL of the acid has a mass of 240 g?
24.A temperature of 798K is equal to what Celsius temperature?
Figure 1-1
25.Use the graph in Figure 1-1 to determine the percent of human blood that is NOT red blood cells.
Figure 1-2
26.Use Figure 1-2 to find the percentage of adults who carpool compared to the number of adults who ride the bus.
Ch. 1 Physical Science practice
Answer Section
MULTIPLE CHOICE
1.ANS:C
2.ANS:C
3.ANS:C
4.ANS:A
5.ANS:D
6.ANS:D
7.ANS:B
8.ANS:D
MATCHING
9.ANS:D
10.ANS:I
11.ANS:K
12.ANS:E
13.ANS:G
14.ANS:H
SHORT ANSWER
15.ANS:
The cubit is not a standard measurement. There is no exact quantity to compare the cubit with so the measurement in cubits of the door and the table doesn't mean anything.
16.ANS:
universally accepted measurements, easy to compare and convert units
17.ANS:
problem, hypothesis, experiment, theory, scientific law
18.ANS:
400 g
19.ANS:
60ºC
20.ANS:
line graph
21.ANS:
353 K
PROBLEM
22.ANS:
volume = 22 mL – 18 mL = 4 mL
23.ANS:
d = 240 g/200 mL = 1.2 g/mL = 1.2 g/cm3
24.ANS:
Celsius temperature = 798K – 273 = 525ºC
25.ANS:
57 percent (55% = 2% = 57%)
26.ANS:
approximately 20 percent