Constructed+Response+Questions

What is a __C__onstructed __R__esponse __Q__uestion?
Constructed Response Questions are open-ended questions that measure application-level cognitive skills as well as content knowledge. These questions provide students with the opportunity to generate and weave ideas into a short written response that demonstrates their ability to apply knowledge of content and scientific inquiry.

Sample Question:
An agricultural company introduced a species of insect to the state of Vermont to help pollinate certain crops. This species quickly multiplied and became a major pest. Scientist working for the state are considering introducing a species of blackbird that eats these insects and might limit the growth of their population. The proposed project is called Project Blackbird.

Planning Process:

 * List several questions the scientists should research about this species of blackbird before introducing it to Vermont.
 * Think about those questions. Be prepared to explain why the scientist needs an answer to those questions in order to evaluate Project Blackbird and decide if the blackbirds should be introduced to the state.
 * After five years of study, what data would show that Project Blackbird was a success?

Begin Writing:

 * Introduce the topic by explaining the situation.
 * Include one body paragraph for each question or idea you are addressing.
 * Write a conclusion that will use the ideas you explored to explain why Project Blackbird should or should not be introduced.

= Your CRQ =

Introduction:
Lightning can be very destructive because it creates huge currents in materials that are poor conductors and generates a great deal of heat. Lightning rods were invented by Benjamin Franklin in the 1750's. They are designed to carry charge safely to the ground. Its primary purpose is to prevent lightning from striking in the first place.

**CRQ:**
How does a lightning rod do this? Consider the following 3 questions.

**Thinking Critically:**

 * 1) **Hypothesize**: Along what path would the current travel if a house without a lightning rod were struck by lightning?
 * 2) **Evaluate**: Should the resistance between the ground terminal and Earth be high or low?
 * 3) **Infer**: What are the dangers of an incorrectly installed lightning rod system?

**Your Task:**
Research the questions above. Your goal is to use physics concepts to explain and justify your answers. Show formulas where appropriate. Do not limit yourself to the concepts that are in your textbook but use the knowledge that you have gained throughout this course.

=Resources:=

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