Quiz about 2nd Semester Physical Science FINAL

Question 1

Charging by ____________ is the rearrangement of electrons on a neutral object caused by a nearby charged object.

Accepted Answer

induction

Answer

conduction

Question 2

___________ are materials that do not allow electric current to pass through easily.

Accepted Answer

insulators

Answer

conductors

Question 3

___________ is the accumulation of electrical charges on an object.

Accepted Answer

static electricity

Answer

voltage

Question 4

Charges flow from ___________ voltage to ___________ voltage.

Accepted Answer

high to low

Answer

low to high

Question 5

Making wires thinner, longer, or hotter ___________ the resistance.

Accepted Answer

increases

Answer

decreases

Question 6

What is the potential difference (voltage) if a resistance of 20 ohms produces a current of 10 amperes?
V=IR

Accepted Answer

200 volts

Answer

2 volts

Question 7

area around charged object; exerted by a charged object; allows us to charge by induction

Accepted Answer

electric field

Answer

grounding

Question 8

Protons have ___________ electrical charge

Accepted Answer

positive

Answer

negative

Question 9

Electrons have ___________ electrical charge

Accepted Answer

negative

Answer

positive

Question 10

Mr. Robinson and his class are conducting an experiment.  The class needs to choose a good insulator.  Which of the following could be used as an insulator?

Accepted Answer

plastic plate

Answer

silver spoon

Question 11

What is the current produced by a 9-volt battery flowing through a resistance of 0.2 ohms? I= V/R

Accepted Answer

45 amps

Answer

1.8 amps

Question 12

What does the symbol labeled #1 represent?

Accepted Answer

lights

Answer

batteries

Question 13

What does the symbol labeled #2 represent?

Accepted Answer

batteries

Answer

lights

Question 14

Circuit _____ is wired in parallel, and circuit _____ is wired in series.

Accepted Answer

B; A

Answer

A; B

Question 15

An electric current does NOT exist in ______ circuit.

Accepted Answer

open

Answer

series

Answer

parallel

Answer

closed

Question 16

Temporary magnet made by placing a piece of iron inside a current carrying coil of wire.

Accepted Answer

Electromagnets

Answer

Ferromagnetism

Question 17

The Law of Conservation of Charge states that

Accepted Answer

charge cannot be created and destroyed but it can be transferred.

Answer

charge cannot be created and destroyed and it cannot be transferred.

Question 18

Which of the following statements about electric charge is true?

Accepted Answer

Electrical forces act at a distance.

Answer

Objects must be touching on another to exert electrical force.

Question 19

Which two areas of physical science are closely related to the development of electric motors and generators?

Accepted Answer

electricity and magnetism

Answer

electricity and sound

Question 20

Refraction occurs when a wave changes its ________________ as it passes through a different medium.

Accepted Answer

speed

Answer

intensity

Question 21

____________________ need a medium to travel through.

Accepted Answer

mechanical waves

Answer

transverse waves

Question 22

____________________ is the process of a wave striking a surface and bouncing off.

Accepted Answer

reflection

Answer

refraction

Question 23

Which is an example of a compressional wave?

Accepted Answer

sound wave

Answer

x-ray

Question 24

What is the velocity of a wave having a frequency of 25 Hz and a wavelength of 10 m?

Accepted Answer

250 m/s

Answer

2.5 m/s

Question 25

A glass prism is able to bend light because

Accepted Answer

light is refracted as it enters a different medium

Answer

the prism creates destructive interference

Question 26

Which electromagnetic wave comes from the sun to give you Vitamin D?

Accepted Answer

ultraviolet waves

Answer

gamma rays

Question 27

Light waves travel the fastest in

Accepted Answer

outer space/ a vacuum

Answer

a solid

Answer

a liquid

Answer

a gas

Question 28

Sound waves travel the fastest in

Accepted Answer

a solid

Answer

a liquid

Answer

a gas

Answer

outer space/ a vacuum

Question 29

When two or more substances are physically combined, the result is a(n)

Accepted Answer

mixture

Answer

element

Question 30

Three examples of physical changes are

Accepted Answer

boiling of water, blowing up a balloon, and melting a candle

Answer

sawing wood, crushing a can, and burning a marshmallow

Question 31

Milk, paint, and mayonnaise are all examples of

Accepted Answer

heterogenous mixtures

Answer

homogenous mixtures

Question 32

Hydrogen (H2), gold (Au), and iron (Fe) are all examples of

Accepted Answer

elements

Answer

compounds

Question 33

A piece of wood that measures 3 cm by 6 cm by 4 cm has a mass of 80 g.  What is the density of the wood?
d=m/v

Accepted Answer

1.11 g/cm3

Answer

5,760 g/cm3

Question 34

Atoms of elements in the same group of the periodic table share the same

Accepted Answer

number of valence electrons

Answer

number of energy levels

Answer

atomic numbers

Question 35

Atoms of the same element that have different numbers of neutrons are called

Accepted Answer

isotopes

Answer

ions

Question 36

Boron, Carbon, Nitrogen and Oxygen are all members of the same

Accepted Answer

period

Answer

group

Question 37

Hydrogen is in group 1 with Lithium, Sodium, Potassium, Rubidium, Cesium, and Francium because it

Accepted Answer

has 1 valence electron

Answer

is a gas

Question 38

Who arranged the elements on the periodic table based on atomic mass

Accepted Answer

Dmitri Mendeleev

Answer

Ernest Rutherford

Question 39

2 HgO --> 2 Hg + O2
How many many molecules of HgO are in the reactants?

Accepted Answer

2

Answer

1

Question 40

What coefficient should be used to make the following equation balanced?

N2+O2--> __?__NO

Accepted Answer

2

Answer

1

Answer

3

Answer

4

Question 41

What is the little number after an element in a chemical equation called.
Example: H2

Accepted Answer

subscripts

Answer

coefficient

Question 42

Which of the following equations are correctly balanced?

Accepted Answer

6CO2 + 6H2O --> C6H12O6 + 6O2

Answer

12CO2 +H2O --> C6H12O6 + O2

Question 43

Is the following equation balanced?
4Fe + 3O2 --> 2 Fe2 O3

Accepted Answer

Yes

Answer

No

Question 44

Is the following equation balanced?
2C2H2 + 5O2 --> 4CO2 + 2H2O

Accepted Answer

Yes

Answer

No

Question 45

How many HCl molecules do you need to balance this equation? 
Mg +  __HCl --->  MgCl2 + H2

Accepted Answer

2

Answer

1

Answer

3

Answer

4

2nd Semester Physical Science FINAL

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