Download Chapter 6 Section 1 Worksheet 4 (2)

Name
Date
Electricity
Section 2 Electric Current
Scan Use the checklist below to preview Section 2 of your book.
• Read all section titles.
• Read all bold words.
• Read all charts and graphs.
• Look at all the pictures and read their captions.
• Think about what you already know about electricity.
Write two facts you discovered about electric currents as you
scanned the section.
1.
2.
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
Review
Vocabulary Use the term pressure in a scientific sentence.
SI
New
Vocabulary Define the following key terms.
electric current
voltage difference
electric circuit
resistance
Ohm’s law
Academic
Vocabulary Use a dictionary to define terminate.
terminate
Electricity
71
Name
Date
Section 2 Electric Current
Current and
Voltage
Difference
(continued)
Create a drawing of an electric circuit that has a battery
powering a digital clock. Show the direction of electron flow, and
describe the movement of the electrons in the circuit.
I found this information
on page
.
I found this information
on page
.
Compare dry-cell batteries to wet-cell batteries. Describe the
components of each type of battery. In your own words, explain
how it works.
Battery Type
Dry-cell
Wet-cell
72 Electricity
Components
How It Works
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
Batteries
Name
Date
Section 2 Electric Current
Resistance
(continued)
Summarize the source of resistance in a material.
I found this information
on page
.
I found this information
on page
.
Organize the factors that affect the electrical resistance of a
material. Write each word in one of the boxes below.
hotter
cooler
longer
shorter
More Resistance
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
Ohm’s Law
I found this information
on page
.
thicker
thinner
Less Resistance
Define three equations that come from Ohm’s law.
Unknown Value
Current
Known Values
Voltage difference
Resistance
Equation
Resistance
Voltage difference
S YNTHESIZE I T
Electricians use different thickness of copper wire when
they create the electrical circuits in a home. Use your knowledge of resistance to
explain why an electrician would choose a thicker wire for a circuit that will provide
power to a high-current appliance.
Electricity
73