Tuesday, September 26, 2006

1st Period: Practice Activity 5 Answers

I know that I have your papers, but I will type the complete correct answers for each question.
1. "d) The longer the pendulum, the less time it takes to swing back and forth" is the statement that is not true.
11 people missed this question!

2. "e) An uncharged object can have different numbers of positive and negative charges" is the statement that is not true.
19 people missed this question!

3."c) an electrical switch" is not required for an electric-circuit interaction.
1 person missed this question.

4. "c) You must have two magnets to have a magnetic interaction" is the statement that is not true.
9 people missed this question!

5. "b) The two objects move toward each other" is evidence for an electric-charge interaction between a charged object and an uncharged object.
15 people missed this question!

6. "a) Add more cells in the series circuit" would make the electrical current increase.
2 people missed this question.

7. To make an electromagnet you would "e) Wrap a coil of wire around a magnetic material, then connect the coil in a circuit to a source of elecrticity."
8 people missed this question!

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