WorksheetsSummer School Physical Science - CH 7 - Section I
Total questions: 13
Worksheet time: 13mins
Name
Class
Date
1.
A static discharge differs from an electric current in that a static discharge ________________.
a)
is a flow of electrons
b)
lasts for only a fraction of a second
c)
results because a force is exerted on the electrons
d)
involves the movement of ions as well as electrons
2.
Electric charge that has accumulated on an object is referred to as ______________.
a)
current electricity
b)
circuit electricity
c)
static electricity
d)
current circuit
3.
A material through which electrons do not move easily is a(n) _________.
a)
transformer
b)
insulator
c)
conductor
d)
fuse
4.
Lightning is _____________.
a)
a very large discharge of static electricity
b)
a buildup of neutrons
c)
a low voltage electric current
d)
harmless
5.
Two objects with LIKE static charges will
a)
attract each other
b)
even out in the end
c)
repel each other
d)
cause a spark
6.
Static charges build up when
a)
protons move within an object
b)
electrons move within an object
c)
neutrons move within an object
d)
the nucleus moves within an object
7.
Which subatomic particle has a POSITIVE charge?
a)
Proton
b)
Neutron
c)
Electron
d)
Nucleus
8.
Which subatomic particle has a NEGATIVE charge?
a)
Proton
b)
Neutron
c)
Electron
d)
Nucleus
9.
If two objects with static charge are attracted, what do you know about them?
a)
They are both positively charged.
b)
They are both negatively charged.
c)
One is positively charged and one is negatively charged, but you won't be able to tell which is which.
d)
One is positively charged and one is negatively charged, and you can tell which is which by looking at them.
10.
If an object has more positive than negative charges, its electrical charge is...
a)
positive
b)
negative
c)
neutral or no charge
d)
opposite
11.
If an object has the same number of positive and negative charges, its electrical charge is...
a)
positive
b)
negative
c)
neutral or no charge
d)
opposite
12.
What happens when you touch a metal doorknob after rubbing your shoes on the carpet?
a)
The doorknob sends a burst of electric current into your body
b)
Millions of electrons go from your finger into the doorknob
c)
The doorknob sends millions of electrons into your finger
d)
our finger becomes negatively charged
13.
If you rub a glass rod with a piece of silk, the rod becomes positively charged. This means that
a)
friction destroyed electrons in the rod.
b)
the silk has become negatively charged.
c)
protons have moved to the rod.
d)
glass attracts more protons.
100 %
