Name Class Date
Skills Worksheet
Directed Reading B
Section: Electric Charge and Static Electricity
ELECTRIC CHARGE
Circle the letter of the best answer for each question.
1. What do you call the tiny particles that make up matter?
a. electricity c. electrons
b. atoms d. charges
2. Atoms are made of three things, protons, neutrons and what other particle?
a. charges c. electrons
b. electricity d. forces
3. Which of the following laws says that opposite charges attract?
a. the law of electrons
b. the law of electric charges
c. the law of atomic charges
d. the law of charged atoms
Charges Exert Forces
4. Which of the following affects the size of an electric force?
a. number of atoms
b. the type of charge
c. the amount of each charge
d. the number of protons
The Force Between Protons and Electrons
5. What type of charge do protons have?
a. negative charge
b. opposite charge
c. positive charge
d. no charge
Directed Reading B continued
Circle the letter of the best answer for each question
6. What type of charge do electrons have?
a. opposite charge
b. negative charge
c. positive charge
d. no charge
The Electric Force and the Electric Field
7. What is an electric force?
a. the force between charged objects
b. the law about charges
c. the distance between the charges
d. the amount of each charge
8. What is an electric field?
a. the area around an atom
b. the area around an electron
c. the area around a proton
d. the area around a charged object
CHARGE IT!
9. When an object loses electrons, what happens to its charge?
a. The charge becomes positive.
b. The charge becomes negative.
c. The size of the charge gets bigger.
d. The size of the charge gets smaller.
10. When an object gains electrons, what happens to its charge?
a. The charge becomes positive.
b. The charge becomes negative.
c. The size of the charge gets bigger.
d. The size of the charge gets smaller.
Directed Reading B continued
Read the description. Then, draw a line from the dot next to each description to the matching word
11. charging by wiping electrons from one object to another12. used to test if something is charged
13. rearranging charges in an uncharged metal object without direct contact with a charged object
14. charging when electrons move by direct contact / •
•
•
• / a. conduction
b. induction
c. friction
d. electroscope
MOVING CHARGES
Conductors
Circle the letter of the best answer for each question.
15. Which of the following is a material in which charges can move easily?
a. electrical conductor
b. electrical insulator
c. electrical maker
d. electrical machine
Insulators
16. Which of the following is a material in which charges cannot move easily?
a. electrical conductor
b. electrical insulator
c. electrical maker
d. electrical machine
Directed Reading B continued
STATIC ELECTRICITY
Circle the letter of the best answer for each question
17. Which of the following is electric charge at rest?
a. electric current
b. electric discharge
c. static electricity
d. conduct charge
Electric Discharge
18. What do you call the loss of static electricity as charges move off an object?
a. electric current
b. electric discharge
c. static electricity
d. conduct charge
Lightning Dangers
Read the words in the box. Read the sentences. Fill in each blank with the word or phrase that best completes the sentence
lightning rod / Lightning / grounded19. Electric discharge within a cloud causes ______.
20. When a building is hit by lightning, a ______can protect it from damage
21. The wires in a lightning rod are ______so The charges go to Earth.
Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor.
Holt Science Technology 15 Introduction to Electricity