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Lab Chapter 2: Scientific Method

front 1 If conducting an experiment based on this observation, which would not be a control? I caught four fish at the seven o’clock in the morning but didn’t catch any at noon.	back 1 time of day fishing
front 2 What type of graph would be appropriate for this data set?	back 2 line
front 3 Determine if this statement is testable or not testable. For the past two days the clouds have come out at p.m. and it has started raining at 3:15 p.m.	back 3 not testable Weather is not a controllable factor, therefore, we can not conduct a controlled experiment with this changing factor.
front 4 Based on the information in Table 2, what patterns do you observe?	back 4 As more dissolved oxygen is found present in the water sample, it can be predicted that more fish will be present in the area where the water sample is taken. As the amount of dissolved oxygen increases the fish population increases up until a certain point. Levels greater than 12 ppm see a slight decrease in the number of fish.

front 5 Which of these represents a possible control water quality vs. fish population?	back 5 All: type of fish water temperature food light
front 6 Determine if this statement is testable or not testable. The salaries at Smithand Company are based on the number of sales and Billy makes 3,000 dollars more than Joe.	back 6 testable An experiment can be conducted that tests the amount of sales and the resulting salaries.
front 7 Which represents the independent variable in the experiment in Exercise 1 testing the Water Quality vs. Fish Population?	back 7 dissolved oxygen concentration
front 8 Based on this data, which of these statements are supported?	back 8 The number of fish in the body of water increases along with dissolved oxygen up to about 12 ppm.

front 9 Determine if this statement is testable or not testable. Ice cream melts faster on a warm summer day than on a cold winter day.	back 9 testable
front 10 Write a hypothesis based on this observation. Ice cream melts faster on a warm summer day than on a cold winter day.	back 10 Hypothesis: Heat energy flows more quickly when there is a bigger gap between the temperature of the ice cream and the temperature of the air outside.
front 11 Determine if this statement is testable or not testable. The teller at the bank with brown hair and brown eyes and is taller than the other tellers.	back 11 not testable
front 12 Determine if this statement is testable or not testable. For the past two days the clouds have come out at p.m. and it has started raining at 3:15 p.m.	back 12 not testable Weather is not a controllable factor, therefore, we can not conduct a controlled experiment with this changing factor.

front 13 Determine if this statement is testable or not testable. The Italian restaurant across the street closes at 9 p.m. but the one two blocks away closes at 10 p.m.	back 13 not testable
front 14 Determine if this statement is testable or not testable. Bob bought a new blue shirt with a golf club on the back for twenty dollars because he did not want to spend the forty dollars it costs for a blue shirt with a golf club on the front.	back 14 no testable
front 15 Which represents the dependent variable in the experiment in Exercise 1 testing the Water Quality vs. Fish Population?	back 15 number of fish
front 16 Determine if this statement is testable or not testable. George did not sleep at all last night because he was up finishing his paper.	back 16 not testable A test could be conducted to determine if George's sleep was inhibited by finishing his paper.

front 17 Determine if this statement is testable or not testable. When a plant is placed on a window sill, it grows faster than when it is placed on a coffee table in the middle of the living room.	back 17 testable Yes, you can create a controlled experiment using plants and differing the amount of light they receive.
front 18 Determine if this statement is testable or not testable. I caught four fish at the seven o’clock in the morning but didn’t catch any at noon.	back 18 testable You can create an experiment that tests the amount of fish caught at different times of the day.
front 19 Determine if this statement is testable or not testable. The salaries at Smithand Company are based on the number of sales and Billy makes 3,000 dollars more than Joe.	back 19 testable An experiment can be conducted that tests the amount of sales and the resulting salaries.