Scientific Method Interpretation

​Scientific Method

Interpretation Survey

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Over a wide area of the United States, the oak tree is threatened by the disease called oak wilt.

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The disease is caused by a fungus.

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The Question: HOW IS THE DISEASE SPREAD?​

What we know....

Some text here about the topic of discussion

After much studying and observation, scientists narrowed the answer down to TWO possible hypotheses.

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HYPOTHESIS 1 - The disease is spread by carriers such as insects.​

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HYPOTHESIS 2 - The disease is spread from tree to tree by root contact.​

You will read 10 separate facts. For each fact you will need to determine if that fact supports hypothesis 1, hypothesis 2, both hypotheses, or none of the hypotheses.

Poll

1. The disease-causing fungus can grow on the Ash, Dogwood, Cherry, and other trees.

• a. this supports hypothesis 1 (bugs)

• b. this supports hypothesis 2 (tree root contact)

• c. this supports both (either) hypotheses

• d. this supports neither hypothesis (it is totally irrelevant)

Poll

2. The top of the diseased tree begins to wilt and turn brown, then the lower limbs become involved.

• a. this supports hypothesis 1 (bugs)

• b. this supports hypothesis 2 (tree root contact)

• c. this supports both (either) hypotheses

• d. this supports neither hypothesis (it is totally irrelevant)

Poll

3. Every kind of oak (red, white, etc.) is susceptible. (can get the disease)

• a. this supports hypothesis 1 (bugs)

• b. this supports hypothesis 2 (tree root contact)

• c. this supports both (either) hypotheses

• d. this supports neither hypothesis (it is totally irrelevant)

Poll

4. In a stand (group) of oak trees, the roots of neighboring trees become grafted (attached) to one another.

• a. this supports hypothesis 1 (bugs)

• b. this supports hypothesis 2 (tree root contact)

• c. this supports both (either) hypotheses

• d. this supports neither hypothesis (it is totally irrelevant)

Poll

5. If one tree of a group of trees close to each other dies, they all die.

• a. this supports hypothesis 1 (bugs)

• b. this supports hypothesis 2 (tree root contact)

• c. this supports both (either) hypotheses

• d. this supports neither hypothesis (it is totally irrelevant)

Poll

6. Insects feed on the mats of fungus which grow under the bark of affected trees.

• a. this supports hypothesis 1 (bugs)

• b. this supports hypothesis 2 (tree root contact)

• c. this supports both (either) hypotheses

• d. this supports neither hypothesis (it is totally irrelevant)

Poll

7. When one tree of a stand of trees is artificially infected, poisoning of all the immediately surround trees will usually protect the outer trees.

• a. this supports hypothesis 1 (bugs)

• b. this supports hypothesis 2 (tree root contact)

• c. this supports both (either) hypotheses

• d. this supports neither hypothesis (it is totally irrelevant)

Poll

8. Trees can be artificially infected by placing the fungus in a cut or injury in the bark.

• a. this supports hypothesis 1 (bugs)

• b. this supports hypothesis 2 (tree root contact)

• c. this supports both (either) hypotheses

• d. this supports neither hypothesis (it is totally irrelevant)

Poll

9. In a large group of trees, the fungus appears randomly throughout the area.

• a. this supports hypothesis 1 (bugs)

• b. this supports hypothesis 2 (tree root contact)

• c. this supports both (either) hypotheses

• d. this supports neither hypothesis (it is totally irrelevant)

Poll

10. The fungus does not survive when exposed to direct sunlight.

• a. this supports hypothesis 1 (bugs)

• b. this supports hypothesis 2 (tree root contact)

• c. this supports both (either) hypotheses

• d. this supports neither hypothesis (it is totally irrelevant)