Magnets And Electricity Question Preview (ID: 48330)


UT SEED Standards 7.1.4 Review. TEACHERS: click here for quick copy question ID numbers.

A compass is a small magnet that always points north. What does this tell us?
a) Earth is surrounded by a magnetic field
b) Solar rays affect magnetism
c) Most compasses need to be set
d) There's too much static in the air

What characteristics do magnetic substances have?
a) They can push or pull objects they are not touching
b) They fall faster than other objects when you drop them
c) They are always black and cold to touch
d) They can give an electrical shock

What can you make out of a power source (like a battery) and wire coiled around an iron rod?
a) an electromagnet
b) a permanent magnet
c) an electric motor
d) a generator

Which of the following ways would be the best way to observe and compare the magnetic fields of various magnets?
a) Conduct an experiment using different types of magnets and iron fillings
b) Search for an internet website to find experiments on electricity
c) Ask a high school science teacher about the history of natural magnets
d) Use a reference book and read a section about electromagnetism

What happens when two north poles of magnets are placed together?
a) They repel
b) They cancel each other out
c) They attract
d) The strength of the magnet is doubled

What are two ways you can make an electromagnet stronger?
a) more coils, more power
b) more coils, a longer nail
c) more power, longer wire
d) a longer nail, longer wire

Which statement best describes the types of materials that electricity can flow through?
a) Objects that have metal in them can usually conduct electricity
b) Objects that can bend, like wire, only conduct electricity
c) Objects must have a lot of mass to be able to conduct electricity
d) Only objects that can be magnetized can conduct electricity

When performing an experiment with electricity, which material would act as an insulator?
a) Popsicle stick
b) wire
c) staple
d) paper clip

Two objects have collected static electricity with the same charge. What would the objects do when placed near each other?
a) repel
b) attract
c) stick together
d) nothing

Which type of electricity moves along a pathway to turn on a light?
a) current electricity
b) static electricity
c) lightening energy
d) turbine electricity

What is an example of static electricity in nature?
a) lighteining
b) ocean currents
c) volcanoes
d) rain

Electric current is the movement of ___________________ along a path.
a) electrons
b) protons
c) magnets
d) atoms

Moving a magnet near a wire causes what to happen?
a) An electric current is created
b) An electromagnet is made
c) The fire alarm goes off
d) Nothing

What makes electric forces stronger?
a) more charge, less distance between objects
b) more charge, more distance between objects
c) put the charge on a magnet
d) less charge, more distance between objects

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