1 / 24

Science Investigation

Ms. Smith Mrs. Malone. Science Investigation. September 2, 2011. DO NOW : Pick up your handouts. Put the “M&M Reading” homework on the corner of your desk. Complete the “Lab Safety Matching Cards” handout. :. Ask about objects, organisms, and events in the natural world.

jaime-tyler
Download Presentation

Science Investigation

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Ms. Smith Mrs. Malone Science Investigation September 2, 2011 • DO NOW: • Pick up your handouts. • Put the “M&M Reading” homework on the corner of your desk. • Complete the “Lab Safety Matching Cards” handout. :

  2. Ask about objects, organisms, and events in the natural world. Well-Defined Questions Can be answered through investigations that involve experiments, observations, or surveys. Are answered by collecting and analyzing evidence that is measurable. Relate to scientific ideas rather than personal preference or moral values. Do not relate to the supernatural or to non-measurable phenomena.

  3. How does a paper airplane fly? Not well-defined. Is it a WELL-DEFINED QUESTION??

  4. Does the shape of the wing affect how far a paper airplane will fly? Well-defined! Is it a WELL-DEFINED QUESTION??

  5. Is rock music better than hip-hop music? Not well-defined. Is it a WELL-DEFINED QUESTION??

  6. Does rock music make more money than hip-hop music? Well-defined! Is it a WELL-DEFINED QUESTION??

  7. What temperature of water will dissolve M&Ms faster? Well-defined! Is it a WELL-DEFINED QUESTION??

  8. Which M&M tastes better: red or yellow? Not well-defined. Is it a WELL-DEFINED QUESTION??

  9. Hypothesis A hypothesis is an educated guess about how things work. Create a hypothesis for the following scientific question. Question: Does vinegar cause M&M colors to dissolve faster than water?

  10. Hypothesis Question: “Do some M&M colors dissolve faster in water than others?” Write your hypothesis behind the “Hypothesis” tab in your foldable. I predict…

  11. Hypothesis • IF the M&M has a darker color, THEN it will dissolve faster. • IF the M&M has a lighter color, THEN it will dissolve faster.

  12. Materials Behind the “Materials” tab in your foldable, list all of the materials that you will be using in the M&M Investigation lab. Materials: • White paper • Different colored M&Ms • Water • Pipette • Petri dish • Beaker • Marker • Timer • Paper towels

  13. Variables • These changing quantities are called VARIABLES. • An experiment has 3 kinds of variables: independent (manipulated), dependent (responding) and controlled (constants)

  14. Independent Variable • Variable that is purposely changed or manipulated • a fair test has only one independent variable. Example: Does the amount of fertilizer affect plant growth? The amount of fertilizer is the independent variable because the scientist has control over how much fertilizer is used in the experiment.

  15. Independent Variable Suppose that you wonder whether you can run a marathon faster when you eat pasta the night before or when you drink coffee the morning of the race. Your hunch is that loading up on pasta will give you the energy to run faster the next day. The independent variable is the consumption of pasta, and the dependent variable is how fast you run the race. Now, if you eat several plates of spaghetti the night before you race, but then get up the next morning and drink two cups of coffee before you head to the start line, your experiment is useless. Why is it useless? By drinking the coffee, you introduce a second independent variable, so you will not know whether the faster race time is due to the pasta or the coffee.

  16. Independent Variable What is the independent variable in your M&M investigation?

  17. Independent Variable Independent Variable: M&M Color Why is M&M color the independent variable?

  18. Dependent Variable • what is measured in the experiment Example: Does the amount of fertilizer affect plant growth?

  19. Dependent Variable What is the dependent variable in your M&M investigation?

  20. Dependent Variable Answer: How fast the M&M colors dissolve.

  21. Constants • The variables that are not changed are called controlledvariables. (constants) Example: Does the amount of fertilizer affect plant growth? Independent variable: amount of fertilizer Dependent variable: plant growth Controlled variables: same type of plant, same pot size, same amount of water, same amount of sunlight

  22. Graphs • A graph is a chart or drawing that shows the relationship between changing things • Can you name some common graph types? • Graphs must include a title and labels on the x and y axis. Why will we use a bar graph in our M&M investigation?

  23. Bar Graph Example TITLE Y-Axis Dependent Variable X-Axis Independent Variable

  24. DRY MIX D = dependent variableR = responding variableY = graph information on the Y-axis(vertical, up and down)M = manipulated variable I  = independent variableX  = graph information on the X-axis(horizontal, side to side)

More Related