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Hypotheses and Inquiry (Grade 9)

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Hypotheses and Inquiry

A hypothesis is a(n)                 of the outcome of the experiment.
  1. observation
  2. mistake
  3. conclusion
  4. prediction
Which is NOT a description of a good hypothesis?
  1. A good hypothesis makes logical sense.
  2. A good hypothesis is a testable explanation of an observation.
  3. A good hypothesis follows from what you already know about a situation.
  4. A good hypothesis is a guess based on previous experiments.
What is a good example of a hypothesis?
  1. I can clean the window with water.
  2. If I clean the window with water, then the window will be clean.
  3. If I like water, then it should clean the window.
  4. Water is a glass cleaner.
An investigator is interested in seeing how tall a certain species of plant will grow if it is kept under red light for a month. What would be valid hypothesis for this experiment?
  1. If the light is red, then the plant will grow.
  2. If the investigator uses pea plants, then there will be a lot of growth.
  3. If plants are grown under different colored lights, then they will grow different heights.
  4. If a month passes, then the plant will grow under the red light.
What would be an appropriate hypothesis related to investigating the image?
Pictograph - Adult Butterfly
  1. If the temperature becomes too cold, then the butterfly will be unable to reproduce.
  2. The butterfly eats nectar only when there is no wind.
  3. The spots on the butterfly's wings are used to help it capture prey.
  4. Butterflies use their antennae to detect signals coming from other organisms.
What is scientific inquiry?

How long does a hypothesis need to be to carry out a valid experiment?
  1. The hypothesis should be at least three sentences.
  2. The hypothesis needs to be as long as necessary to accurately describe the predicted outcomes.
  3. The hypothesis can be never be more than one sentence long.
  4. The hypothesis has to be long enough to include all of the methodology in the experiment.
Which scenario describes a type of scientific inquiry? (Select all that apply.)
  1. observing the mating habits of snowy egrets
  2. testing the effects of a new drug on a disease
  3. recording how long it takes a person to run a race
  4. listening to different kinds of music for an afternoon
  5. cooking a large pot of pasta and meatballs
  6. measuring how tall plants grow when given different fertilizers
In order for a hypothesis to be valid, the statement made needs to be                       .
In order for scientific inquiry to be considered valid, the data collected must support the hypothesis.
  1. True
  2. False
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