Stuck on You!
What do we call an object that attracts iron?
a. kinetic energy
b. conductor
c. magnet
d. potential energy
c. magnet (see page 620)
In a circuit, when one light bulb is removed, the others stay lit. This is called:
a. series circuit
b. parallel circuit
b. parallel circuit (see pages 610-611)
Which is good conductor of electricity?
a. copper
b. glass
c. plastic
d. rubber
a. copper (see pages 612-613)
What kind of energy is also called energy of position?
a. generator
b. motor
c. kinetic
d. potential
d. potential (see pages 634-635)
What do we call a temporary magnet?
a. insulator
b. electromagnet
c. copper
d. static electricity
b. electromagnet (see pages 624-625)
What is a stream of electrons moving through a copper wire called?
a. current electricity
b. generator
c. magnetic field
d. motor
a. current electricity (see pages 608-609)
An electrical charge that builds up on an object is called:
a. kinetic energy
b. potential energy
c. static electricity
d. parallel circuit
c. static electricity (see pages 606-607)
Offices, homes, and factories each use about the same amount of electricity. If you made a pie graph to compare the amounts used, what fraction of the graph would be labeled for each kind of use?
Offices, home and factories would each be 1/3 of the pie graph.
A magnet will hold papers to a refrigerator, but papers are not attracted to magnet. What can be concluded about the refrigerator, the magnet and the papers?
a. the refrigerator, the magnet and the papers are all magnetic
b. the refrigerator and the magnet become magnetized by the papers
c. magnetic forces pass from the papers to both the papers to both the refrigerator and the magnet
d. magnetic forces pass from the magnet, through the papers, to the refrigerator
d. magnetic forces pass from the magnet, through the papers, to the refrigerator (see pages 622-623)
What is the name of a path that has only one way for the current to flow?
a. current electricity
b. magnetic field
c. power field
d. series circuit
d. series circuit (see pages 610-611)
Josiah wants to build a small electric generator. What two items must he have to make his generator?
a. coal and oil
b. coil of wire and magnet
c. steam and turbine
d. wire and switch
b. coil of wire and magnet (see pages 626-627)
Thomas and his family visited a large dam, where they were told that the kinetic energy of falling water was changed to electric energy. What kind of power did this dam produce?
a. chemical power
b. geothermal power
c. hydroelectric power
d. solar power
c. hydroelectric power (see page 636)
Which pair is made up of two things that work in opposite ways?
a. bar magnet and horseshoe magnet
b. chemical energy and mechanical energy
c. generator and motor
d. solar energy and geothermal energy
c. a generator turns a magnet around a coil, while a motor turns a coil inside a magnet (see pages 626-627)
Is it possible to have a switch in a parallel circuit, buts acts like a series circuit because at the place where the switch is, there is no other path for the current to follow?
a. yes
b. no
a. yes, if the switch is at a place on the circuit where it is the only place for the current to flow, this is actually considered a series connection because there is still only one route to complete the current (see pages 610-611)
Batteries supply a stream of electrons to power toys and electronics. When some batteries wear out, they can be recharged. How does this happen?
a. electrons are added to the battery
b. electrons are reversed in the battery
c. batteries make new electrons
b. electrons are reversed in the battery
Suppose you are testing the strength of an electromagnet. You are changing the number of loops of wire. You are measuring how many paper clips the electromagnetic can pick up. What would be the best way to record your data?
a. a bar graph that lists the number of coils of wire on the bottom and number of paper clips on the side
b. a bar graph that lists the number of paper clips on the bottom and the number of coils on the side
a. a bar graph that lists the number of coils of wire on the bottom and the number of paper clips on the side