Science Honors just multiple choice questions Check ANSWERS!*?
*Which statement is true regarding copper’s ability to conduct electricity?
Copper is a good conductor of electricity because its atoms have a loosely held electron in their outer shell that is able to move freely to other atoms.
Copper is a poor conductor of electricity because its atoms are held in positions that cannot move.
Copper is a good conductor of electricity because its atoms have electrons that are tightly bound to their shells and will resist movement.
Copper is a poor conductor of electricity because it has a free electron in its outer shell that will flow to other copper atoms.
I THINK THIS IS C.
*Question 2
When discussing magnetic fields we could say that
metals can become magnetic if they have many spinning electrons that create magnetic fields.
metals are magnets because they have more electrons than non–magnetic materials.
non–paired electrons spin in opposite directions creating a magnetic field.
the spinning electrons in some atoms pair up and create a magnetic field.
I THINK THIS IS D.
*Question 3
In order to create an electromagnet, you would
apply a charge to a non–magnetic material in order to create an electromagnetic field.
coil a ferromagnetic material, wrap in an insulator, and apply a direct current to the coil.
cover a wire with insulation and apply an alternating electrical current to the magnet.
wrap an insulated wire around a metal with ferromagnetic properties and apply an electric current.
I THINK THIS IS C.
*Question 4
Which statement is true?
Hydroelectric power, a nonrenewable resource, is generated from moving water.
Oil, a nonrenewable resource, is processed to make jet fuel.
Propane, a renewable resource, is used in some heating systems.
The energy from the sun, a nonrenewable resource, can be converted to electricity in solar cells.
I THINK THIS IS B.
*Question 5
As populations in North America grow, so does the need for wood to build houses, stores, and other buildings. Select the statement that best describes the long–term global effects of this behavior.
People will need to plant more trees and in a few months the entire problem will be taken care of.
If we control the amount of forests cut, the people will go somewhere else to find wood. This is not a concern as long as they are not cutting down the forests in North America.
Populations are falling in the rest of the world so the extra wood can come from other countries that have a surplus.
In order to meet the demand, forests have been cut down at an alarming rate. If we do not find another source of building materials, our forests, an important natural resource, will all disappear.
I THINK THIS IS A.
*Question 6
When describing the interaction between magnetic poles we could say that
north and south poles attract each other.
north and south poles repel each other.
two north poles will attract each other.
two south poles will attract each other.
I THINK THIS IS B.
*Question 7
Which statement best describes the relationship between metals and magnets?
All metals are attracted to magnets because they are able to create their own magnetic field.
All metals are attracted by magnets; this is why we call metals ferromagnetic.
Magnets do not have a magnetic field so only some metals are attracted to them.
Only some metals are attracted by magnets; these metals are called ferromagnetic.
I THINK THIS IS C.
*Question 8
Which of the following best describes the use of a nonrenewable resource?
California has several power plants that use heat from the Earth to generate electricity.
In the state of Texas, you can find miles of windmills that are used to generate electricity.
Natural gas is a great alternative to electricity for cooking.
The electronic signs along the highway are run by solar power.
I THINK THIS IS A OR C.
*Question 9
When discussing the Earth’s magnetic field we could say that the Earth has a
geomagnetic north pole that is similar to the north pole of a magnet.
geomagnetic north pole that is similar to the south pole of a magnet.
magnetic core that has a charge similar to the south pole of a magnet.
random collection of magnetic poles dispersed in different locations.
I THINK THIS IS A.
*Question 10
Scott was watching the electrician install a new light fixture. Scott noticed that when he was finished, he carefully wrapped some wires with plastic caps and black plastic tape. Select the best explanation of why the electrician would wrap electrical wires with plastic products.
The electrical wires are made of metal, which conducts electricity. In order to make the wiring safe, he would wrap the exposed wire with plastic materials, which are good insulators. This keeps the flow of electricity contained to the light fixture and wiring.
The electrical wi
