The Scientific Method, Reading Graphs, and Taking Measurements (Pre-Quiz)

1-7. Click and drag the orange circle to match the vocabulary words to the correct definitions. Hypothesis A testable prediction written as an "if statement Control Group that receives the "normal" conditions Independent Variable The variable that the scientist changes Dependent Variable The variable that is measured Constant Something during the experiment that stays the same for all groups being tested Observation Using your five senses to determine information Inference Making an assumption or a prediction based on evidence you gather. 8. Which of the following puts the steps of a scientific experiment in the correct order? 1,2,3,4,5 4,2,1,5,3 2,1,5,3,4 4,2,1,3,5 9. What is the purpose of an experiment? To communicate data To test a hypothesis To prove a scientific law None of these Global Warming Experiment Leo is concerned about global warming. He believes that much of the problem is caused by the intense heat rising from surfaces such as streets and the roofs of buildings. Leo convinces the principal of his school to run an experiment.With the help of other students, Leo raises money for a rooftop garden to be planted on one half of his school building. For one marking period, everyday at 3:00, Leo keeps track of the air temperature on both sides of the school building. He finds that the average temperature near the rooftop garden is 73°F. The average temperature away from the garden is 84°F. 10. What is the independent variable for the Global Warming Experiment? Air Temperature Location Global Warming Time of Day 11. What is the dependent variable for the Global Warming Experiment? Air Temperature Location Global Warming Time of Day 12. What is one constant in this experiment? Air Temperature Location Type of plant Time of Day Rock Tumbling Experiment Data13. How much limestone was worn away between Day 1 and Day 2? 2.5 grams 2.8 grams 0.2 gram 2.3 grams 14. According to this graph, what type of rock or mineral is most resistant to erosion? Sandstone Limestone Granite Quartz 15. According to this graph, which rock or mineral erodes the fastest? Sandstone Limestone Granite Quartz Bean Plant Growth Amy wants to know how different fertilizers will effect bean plant growth. She predicts that the bean plant with Miracle Gro will grow the fastest, since the Miracle Gro was the most expensive fertilizer. She places 5 of the same type of bean plants in 5 same-sized pots, with the same amount of soil in each pot. She uses the same amount of fertilizer for each plant. She places them under a grow light so all the plants receive the same amount of light. After 3 months, these are her results: 16. How many items are being compared in the graph? 4 5 3 6 17. Based on the information, Amy's hypothesis should be written as: If Miracle Gro is added to a bean plant's environment, then the average height will decrease. If Miracle Gro is added to a bean plant's environment, then the average height will increase. If nothing is added to a bean plant's environment, then the average height will decrease. If Miracle Gro is added to a bean plant's environment, then the average height will stay the same. 18. What is the control group for this experiment? Granny's Bloomers No Fertilizer There is no control group 19. What is one constant that wasn't mentioned in Amy's experiment? no fertilizer the amount of light the type of pot the bean plant grows the amount of water each plant gets 20. What is the independent variable? The amount of light. The amount of fertilizer The type of plant The type of fertilizer 21. What is the dependent variable in this experiment? height fertilizer light 22. Based on the data, what was the answer to Amy's hypothesis? Her hypothesis was supported. Her hypothesis was rejected. Her hypothesis was not determined, and she needs more information. Metric Units and Tools 23-30. Please match the words from the word bank into the spots of the table where they belong. MEASUREMENT TOOL UNIT OF MEASUREMENTS Volume Graduated Cylinder liters Mass Digital Scale grams Length Ruler meters Temperature Thermometer °C