Scientific Method Scenarios – Flashcards
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A group of middle school students were given a short course in speed reading. The instructor was curious if a monetary incentive would influence performance on a reading test taken at the end of the course.Half the students were offered $5 for obtaining a certain level of performance on the test, the other half were not offered money. What is the dependent variable?
answer
Their results in the course
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A group of middle school students were given a short course in speed reading. The instructor was curious if a monetary incentive would influence performance on a reading test taken at the end of the course.Half the students were offered $5 for obtaining a certain level of performance on the test, the other half were not offered money. What is the hypothesis?
answer
If they are offered money, then they will score better.
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Brad will grow four flats of eggplants (25 plants/flat) for 5 days. The eggplants will then be fertilized as follows: Flat A: 450 g of 3-month-old fish stick compost Flat B: 450 g of 6-month old fish stick compost Flat C: 450 g of 12 month-old fish stick compost Flat D: 0 g of fish stick compost The eggplants received the same amount of sunlight and water each day. At the end of 30 days the students will record the height of the plants (cm) and then throw a party featuring fish sticks. What is the independent variable?
answer
The age of the compost
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Brad will grow four flats of eggplants (25 plants/flat) for 5 days. The eggplants will then be fertilized as follows: Flat A: 450 g of 3-month-old fish stick compost Flat B: 450 g of 6-month old fish stick compost Flat C: 450 g of 12 month-old fish stick compost Flat D: 0 g of fish stick compost The eggplants received the same amount of sunlight and water each day. At the end of 30 days the students will record the height of the plants (cm) and then throw a party featuring fish sticks. What is the dependent variable?
answer
height of the plants
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Brad will grow four flats of eggplants (25 plants/flat) for 5 days. The eggplants will then be fertilized as follows: Flat A: 450 g of 3-month-old fish stick compost Flat B: 450 g of 6-month old fish stick compost Flat C: 450 g of 12 month-old fish stick compost Flat D: 0 g of fish stick compost The eggplants received the same amount of sunlight and water each day. At the end of 30 days the students will record the height of the plants (cm) and then throw a party featuring fish sticks. What are some constants?
answer
Amount of water
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Ten sunflower seeds were planted in each of 5 pots found around the house that contained 500g of "Pete's Potting Soil." The pots were given the following amounts of distilled water each day for 40 days: Pot #3 received the recommended amount of water. The height of each plant was measured at the end of the experiment. 1. Pot #1: 50mL Pot #2: 100mL Pot #3: 150mL Pot #4: 200mL Pot #5: 250mL What is the independent variable?
answer
Amount of water given
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Ten sunflower seeds were planted in each of 5 pots found around the house that contained 500g of "Pete's Potting Soil." The pots were given the following amounts of distilled water each day for 40 days: Pot #3 received the recommended amount of water. The height of each plant was measured at the end of the experiment. 1. Pot #1: 50mL Pot #2: 100mL Pot #3: 150mL Pot #4: 200mL Pot #5: 250mL What is the dependent variable?
answer
The height of the plant
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Ten sunflower seeds were planted in each of 5 pots found around the house that contained 500g of "Pete's Potting Soil." The pots were given the following amounts of distilled water each day for 40 days: Pot #3 received the recommended amount of water. The height of each plant was measured at the end of the experiment. 1. Pot #1: 50mL Pot #2: 100mL Pot #3: 150mL Pot #4: 200mL Pot #5: 250mL What is the control group?
answer
Pot #3
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Ten sunflower seeds were planted in each of 5 pots found around the house that contained 500g of "Pete's Potting Soil." The pots were given the following amounts of distilled water each day for 40 days: Pot #3 received the recommended amount of water. The height of each plant was measured at the end of the experiment. 1. Pot #1: 50mL Pot #2: 100mL Pot #3: 150mL Pot #4: 200mL Pot #5: 250mL What is a constant?
answer
Amount of Pete's Potting Soil
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