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Repetition vs. Replication Homework 9-22-17Directions: Read all of the following scenarios and circle the correct answer. This is 2 pages!1. The following statements were taken from the procedures of four different investigations.InvestigationStatement1Measure the densities of four different substances.2Calculate the mass of a penny, a nickel, and a dime using a triple beam balance.3Read about the winning science fair project and replicate it.4Conduct four trials of counting how many plants are produced when creating the exact conditions.The statement from which investigation is an example of repetition?A. Investigation 1 B. Investigation 2 C. Investigation 3 D. Investigation 42. Keesha did an experiment to study the rate of photosynthesis in the water plant Elodea. She placed a piece of Elodea in a beaker of water and set the beaker 10 centimeters (cm) from a light source. Keesha counted the bubbles released from the plant every minute for five minutes (min). She repeated the process two more times. First, she moved the light to 20 cm from the beaker, and then she moved the light to 30 cm from the beaker. Keesha’s setup and data are shown below. If Keesha’s lab partner wanted to conduct Keesha’s investigation for accuracy what would this be an example of?RepetitionTheoryReplicationLaws3. Read and analyze the following scenarios. Determine which one is an example of repetition.1.Jennifer has taught her pet rat to run a maze. She thinks that the rat will go faster if she puts its favorite treat at the end. She has the rat run the maze ten times with the favorite treat and ten times with a regular food pellet. She uses a stopwatch to measure how long it takes for the rat to get to the reward.2. Kevin was given a set of 5 cubes. He calculated the densities of each to determine the type of cube. The densities were really close to each other, he thought about repeating his investigation but decided he’d asked his friend John to do the same experiment and see if he gets the same results.3. Jenna baked chocolate chip cookies that wound up looking like muffins. She asked Keesha to use the same directions and see if her cookies also look like muffins.4. Mike was mixing a batch of glue and borax solution to make silly putty and discovered a new substance that glows in the dark. He gave John his specific amounts of ingredients and the steps of his procedure. He asked John to try the experiment to see if he gets the same results.Which scenario represents repetition?A. 1B. 2C. 3D. 4 ................
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