Skills And Processes Of Science, Quiz 1
This mini quiz will help you decide how much review you need to do in the area of the skills and process of science, including scientific method, interpreting graphs, lab safety, and measurement.
- 1.Students studied a species of fish. They wanted to find out if these fish grow faster in warmer water. The students designed an experiment to determine how different water temperatures affect the growth of the fish. They placed one fish in a tank at 26°C and another fish in a tank at 22°C. The fish were fed the same amount of food during the experiment. The mass of each fish was recorded at the beginning and at the end of the experiment. What was the independent variable?
- A.
The amount of food given to each fish
- B.
The percent change in mass of the fish
- C.
The starting mass of the fish
- D.
The temperature of the water
- 2.Dreissena polymorpha, the zebra mussel, is a species of mussel that is native to East European waterways. They are not native to the Great Lakes, but they have been introduced there. Researchers believe that zebra mussels are ten times more effective in removing toxic contaminants from polluted water than are native mussels. Which of these experiments would test this hypothesis?
- A.
Place 20 zebra mussels in a tank with PCBs and 20 zebra mussels in another tank without PCBs. Test PCB levels of each tank after one week.
- B.
Place 20 zebra mussels in a tank with PCBs and 20 native mussels in another tank without PCBs. Test PCB levels of each tank after one week.
- C.
Place 20 zebra mussels in a tank with PCBs and 20 native mussels in another tank with PCBs. Test PCB levels of each tank after one week.
- D.
Place 20 native mussels in a tank with PCBs and 20 native mussels in a tank without PCBs. Test PCB levels of each tank after one week.
- 3.
Students studied a species of fish. They wanted to find out if these fish grow faster in warmer water. The students designed an experiment to determine how different water temperatures affect the growth of the fish. They placed one fish in a tank at 26°C and another fish in a tank at 22°C. The fish were fed the same amount of food during the experiment. The mass of each fish was recorded at the beginning and at the end of the experiment. The data the students collected are shown in the table below. The students concluded that warmer temperatures did increase growth in fish. However, they forgot to keep another factors constant. Looking at the students' data table, what is another possible conclusion they might have reached?- A.
Small fish grow at a faster rate than large fish
- B.
Large fish grow faster than small fish
- C.
Guppies grow faster than angelfish
- D.
Angelfish grow faster than guppies
- 4.
The chart below is the nutrition facts found on a bag of pretzels. How would you determine the total number of calories in the entire bag?
- A.
Multiply 25 and 10
- B.
Multiply 25 and 120
- C.
Multiply 10 and 120
- D.
Multiply 120 and 23
- 5.Cheryl wants to perform an investigation that requires using hazardous chemicals. The following steps of the investigation are not in the correct order. 1. Perform the investigation. 2. Design the investigation. 3. Put on gloves, goggles, and an apron. 4. Dispose of waste materials. Which of these is the correct sequence of steps to safely complete the investigation?
- A.
1-3-4-2
- B.
3-2-1-4
- C.
4-1-3-2
- D.
2-3-1-4
- 6.
The graphs below show the effects of temperature and pH on the reaction rate of an enzyme. Food will stay fresh longer when enzyme activity is slowed. Which of the following conditions would most likely slow enzyme activity?
- A.
Reducing pH from 8 to 7 by adding a weak acid
- B.
Increasing pH from 5 to 6 by adding a weak base
- C.
Reducing temperature from 30°C to 20°C by refrigeration
- D.
Increasing temperature from 30°C to 40°C by heating
- 7.
Students crossed male and female flies that had red eyes and recorded the eye color of their offspring. Their data are shown below. Using the data in the table, what is the approximate ratio of red-eyed offspring to brown-eyed offspring?
- A.
1:1
- B.
2:1
- C.
3:1
- D.
4:1
- 8.To determine the mass of a snail, a student will place it on a glass dish and weigh the dish and snail. What should the student do first?
- A.
Weigh the dish before placing the snail on it and add this to the weight of dish and snail.
- B.
Weigh the dish before placing the snail on it and subtract this number from the weight of dish and snail.
- C.
Weigh a different dish and subtract its mass from the mass of the dish and snail.
- D.
Weigh a different snail and add its weight to the weight of the first snail.
- 9.
The following table provides data on the population growth of bacteria over time. According to the data table, which of the following is true?
- A.
The graph of data would be a straight line with a slope of 2.
- B.
The number of bacteria doubles every twenty minutes.
- C.
At 140 minutes, there should be about 96 bacteria.
- 10.Two students placed drops of water on an old penny and a new penny. They recorded how many drops could be placed on each. What data was being recorded as the results?
- A.
How many students were participating
- B.
The color of the penny
- C.
The number of drops of water
- D.
The age of the penny
- 11.In an experiment, a set-up used to compare to the experimental set-up is called ________.
- A.
A control
- B.
A hypothesis
- C.
The independent variable
- D.
The dependent variable
- 12.When you make a graph of data, the independent variable ______________________.
- A.
Goes on the x axis.
- B.
Goes on the y axis.
- C.
Can go on either axis.
- 13.Two students placed drops of water on an old penny and a new penny. They recorded how many drops could be placed on each. Before they write their results, they need to make a table. They decided to make a chart with two columns. What do the two columns represent?
- A.
Student 1 student 2
- B.
Old penny new penny
- C.
Drops of water drops of oil
- 14.Two students placed drops of water on an old penny and a new penny. They recorded how many drops could be placed on each. What data was being recorded as the results?
- A.
How many students were participating
- B.
The color of the penny
- C.
The number of drops of water
- D.
The age of the penny
- 15.Two students placed drops of water on an old penny and a new penny. They recorded how many drops could be placed on each. What is the independent variable?
- A.
The number of students
- B.
The number of drops of water
- C.
The type of penny
- 16.Two students placed drops of water on an old penny and a new penny. They recorded how many drops could be placed on each. What is the dependent variable?
- A.
The number of students
- B.
The number of drops of water
- C.
The type of penny
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