10 B Section review Flashcards
How can you tell that an electroscope has an electrical charge?
The two foil strips separate & stay like that until they are discharged.
Can you tell from an electroscope alone what kind of charge it has? Explain.
Yes. If the charge is positive or negative the leafs to separate since like charges repel.
Describe electrical conductors & insulators & give one example of each.
Electrical conductors offer little resistance to electron motion. Copper is a conductor. Electrical insulators do not allow electrons to move easily. Rubber is an insulator.
What do we call materials that conduct electricity only under special circumstances?
Semiconductors
How does a lightning rod work?
By giving lightning the fastest path to the ground.
The Bible teaches that God is in control of rain & lightning (Ps. 135:6-7). Is the use of a lightning rod an attempt to interfere with God’s judgment on the disobedient? Why or why not?
No. His mercy on humans is through the use of science.
What was the first device to successfully store electrical charges?
Leyden jar
Name two devices that use static electricity to complete a task.
Charged metal plates to reduce smokestack pollution, drum in a copier.
Give an example of static electricity (e.g. a biological one) not mentioned in the textbook.
When you pull a blanket up and get shocked.
