Matter

Question 0

When the atoms of an element combine, they produce ______.
The smallest particle of a (n) ______ is called a molecule.
A) matter
B) elements
C) energy
D) compounds

Answer 0

D) compounds

Question 1

Everything on earth that has weight and occupies space is called _____,
Which is/are made up of atoms of elements .

A) Matter
B) Elements
C) Energy
D) Compounds

Answer 1

A) Matter

Question 2

Atoms contain three types of subatomic particles : electrons, protons , and neutrons. The \_\_\_\_ orbit around the nucleus.
A) electrons
B) protons
C) neutrons
D) nuclei

Answer 2

A) electrons

Question 3

Because of their light weight \_\_\_\_\_ actively participate in the transfer of energy.
A) electrons
B) protons
C) neutrons
D) nuclei

Answer 3

A) Electrons

Question 4

\_\_\_\_\_\_\_\_ do not participate in the flow of energy and get have a positive charge with lines of force moving outward. 
A) electrons
B) protons
C) neutrons
D) nuclei

Answer 4

B) protons

Question 5

The law of electrical charges states that “particles with like charges repel each other
T F

Answer 5

True

Question 6

If an atom contains more electrons then protons the atom has a negative charge

T F

Answer 6

True

Question 7

If two conductive materials in contact with each other are separated, most of the electrons will return to the original surface before the separation is complete.
T F

Answer 7

True

Question 8

When insulated materials are in contact with each other, electrons move to the surface of each other, but the protons remain on the original surface.

T F

Answer 8

True

Question 9

When insulated bodies are quickly separated, both display an electrostatic charge because one surface has an excess of electrons while the other surface has fewer electrons.

T F

Answer 9

True

Question 10

Electrostatic charge is due to an excess of, or a deficiency of, electrons between objects that have been separated.
T F

Answer 10

True

Question 11

The human body in a low humidity area may accumulate a dangerous electrostatic charge of several thousand volts

true or false

Answer 11

True

Question 12

Providing a path to the earth often helps reduce electrostatic charge.

True or false

Answer 12

True

Question 13

The discharge of electrons from a negatively charged object is sometimes seen as an arc, and the arc distance is a function of the____between the bodies.

A static voltage
B dielectric
C a and B
D a or b

Answer 13

C a and b

Question 14

Lightning is the discharging of high-voltage cells within clouds to each other, to the earth, and sometimes to space. True or false

Answer 14

True

Question 15

The high current discharge from the negatively charged cloud to a positively charged object permanently neutralizes the cloud.

True or false

Answer 15

False

Question 16

Lightning frequently terminates to an elevated point and it strikes nonmetallic as well as metallic objects with the same frequency.

True or false

Answer 16

True

Question 17

The termination of the lightning stroke is unlikely to ignite combustible materials. True or false

Answer 17

True

Question 18

Over 100 deaths, 250 injuries, and billions of dollars in property damage are caused each year in the US because of lightning.
True or false

Answer 18

True

Question 19

Lightning protection is intended to protect the building itself, as well as the electrical equipment on or inside the structure.

True or false

Answer 19

False

Question 20

If protection of electrical equipment from lightning is desired, then a listed surge protection device must be installed on the electrical system in accordance with the NEC.

True or false

Answer 20

True