PHYSICS 12
Unit 5 ~ Learning Guide Name: ______________________________
Wendy
Instructions:
Using a pencil, complete the following notes as you work through the related lessons. Show ALL
work as is explained in the lessons. You are required to have this package completed BEFORE
you write your unit test. Do your best and ask questions if you don’t understand anything!
Electrostatics
1. Neutrons have ___________
no positive
charge, while protons are __________, and electrons are
_________.
negative
2. Within an atom, the ___________
electrons are able to move significantly, while the ___________
proton and
__________
neutron can’t.
positive
3. Electrons are attracted to ______________ charges.
4. Electrons are repelled by _______________
negative charges.
5. An object has no net charge (ie. is neutral) if the number of ___________
protons and ___________
electrons are
equal.
6. When am object is negatively charged, it's due to excessive ______________.
electrons
7. When an object is positively charged, it's due to missing _______________.
electrons
8. Electrons are ( repelled by / attracted to) the positive pole on a battery (circle one).
9. Electrons are ( repelled by / attracted to) the negative pole on a battery (circle one).
10. An ___________________
electroscope can detect a charge, but can’t determine if it’s positive or negative.
11. An electrical charge can build up when a bunch of ________________
electrons are built-up on an object
(negative charge) OR if the object loses a bunch of _________________
electrons (positive charge).
12. If a built-up charge isn’t moving, we call it __________________
static electricity (due to the lack of any
movement).
13. When a charge is discharged to the Earth, whether through a water pipe or wire or the ground
itself, we call it ________________.
grounding
14. When you are charged, your hair stands up because like charges _____________
repel so each hair is
trying to get away from other hairs and your head.
friction charging by contact is called
15. Charging involving rubbing is called “charging by _________”,
“charging by ______________”,
conduction and charging without any touch is called “charging by
_______________.
induction
2022-03-17 Page 1 of 22
,PHYSICS 12
16. Consider the following items. Each positive represents billions of protons, while each negative
represents billions of electrons.
Rod-A Rod-B Balloon-A Balloon-B Balloon-C
1- + neutral
electronsJ protons
-
electrons < protons electrons < protons electrons = protons electrons > protons
a) Complete the bottom two rows of the table above. (positive, negative, or neutral in the first
row) and (<, >, or =) in the second.
b) If Rod-A touches Balloon-B, describe (in pictures or steps) what would happen?
+
I
+
A-
c) If Balloon-C is brought close to Balloon-B, describe (in pictures or steps) what would happen?
+
-
I +
- +
-
E-
d) If Rod-B touches Balloon-A, describe (in pictures or steps) what would happen?
=I
-
-
-
+ +
±
e) Describe how you could use Rod-A, along with two Balloon-B’s to make two charged balloons.
+
+ I
Is
2022-03-17 Page 2 of 22
, PHYSICS 12
bag
17. Find a wire heading to a grounding rod or grid near your home. Don’t open any electrical devices
or panels, as they are typically visible without this. If you can’t find one, ask for help. Describe its
location below.
•
18. Describe how a Van de Graph generator works. Show as labelled diagram, describing its charging
process.
19. Prior to a lightning strike, describe where and how the charges build up.
II. I:L:
e. +neiism-e.in
,
positibdbttiÉe
strike will use tree tip as inductor
+ +
+ + T
og
20. Many electronic devices produce a static charge because of the electricity they use. With this in
mind, explain why the screen of your TV tends to be much dustier than most other pieces of
furniture in your home.
2022-03-17 Page 3 of 22
Unit 5 ~ Learning Guide Name: ______________________________
Wendy
Instructions:
Using a pencil, complete the following notes as you work through the related lessons. Show ALL
work as is explained in the lessons. You are required to have this package completed BEFORE
you write your unit test. Do your best and ask questions if you don’t understand anything!
Electrostatics
1. Neutrons have ___________
no positive
charge, while protons are __________, and electrons are
_________.
negative
2. Within an atom, the ___________
electrons are able to move significantly, while the ___________
proton and
__________
neutron can’t.
positive
3. Electrons are attracted to ______________ charges.
4. Electrons are repelled by _______________
negative charges.
5. An object has no net charge (ie. is neutral) if the number of ___________
protons and ___________
electrons are
equal.
6. When am object is negatively charged, it's due to excessive ______________.
electrons
7. When an object is positively charged, it's due to missing _______________.
electrons
8. Electrons are ( repelled by / attracted to) the positive pole on a battery (circle one).
9. Electrons are ( repelled by / attracted to) the negative pole on a battery (circle one).
10. An ___________________
electroscope can detect a charge, but can’t determine if it’s positive or negative.
11. An electrical charge can build up when a bunch of ________________
electrons are built-up on an object
(negative charge) OR if the object loses a bunch of _________________
electrons (positive charge).
12. If a built-up charge isn’t moving, we call it __________________
static electricity (due to the lack of any
movement).
13. When a charge is discharged to the Earth, whether through a water pipe or wire or the ground
itself, we call it ________________.
grounding
14. When you are charged, your hair stands up because like charges _____________
repel so each hair is
trying to get away from other hairs and your head.
friction charging by contact is called
15. Charging involving rubbing is called “charging by _________”,
“charging by ______________”,
conduction and charging without any touch is called “charging by
_______________.
induction
2022-03-17 Page 1 of 22
,PHYSICS 12
16. Consider the following items. Each positive represents billions of protons, while each negative
represents billions of electrons.
Rod-A Rod-B Balloon-A Balloon-B Balloon-C
1- + neutral
electronsJ protons
-
electrons < protons electrons < protons electrons = protons electrons > protons
a) Complete the bottom two rows of the table above. (positive, negative, or neutral in the first
row) and (<, >, or =) in the second.
b) If Rod-A touches Balloon-B, describe (in pictures or steps) what would happen?
+
I
+
A-
c) If Balloon-C is brought close to Balloon-B, describe (in pictures or steps) what would happen?
+
-
I +
- +
-
E-
d) If Rod-B touches Balloon-A, describe (in pictures or steps) what would happen?
=I
-
-
-
+ +
±
e) Describe how you could use Rod-A, along with two Balloon-B’s to make two charged balloons.
+
+ I
Is
2022-03-17 Page 2 of 22
, PHYSICS 12
bag
17. Find a wire heading to a grounding rod or grid near your home. Don’t open any electrical devices
or panels, as they are typically visible without this. If you can’t find one, ask for help. Describe its
location below.
•
18. Describe how a Van de Graph generator works. Show as labelled diagram, describing its charging
process.
19. Prior to a lightning strike, describe where and how the charges build up.
II. I:L:
e. +neiism-e.in
,
positibdbttiÉe
strike will use tree tip as inductor
+ +
+ + T
og
20. Many electronic devices produce a static charge because of the electricity they use. With this in
mind, explain why the screen of your TV tends to be much dustier than most other pieces of
furniture in your home.
2022-03-17 Page 3 of 22
