Worksheets2nd Semester Final Exam Part 2
Total questions: 72
Worksheet time: 36mins
Name
Class
Date
1.
- ____________________ are waves that do not require a medium.
a)
mechanical waves
b)
sound waves
c)
electromagnetic waves
d)
water waves
2.
Mechanical waves are classified according to
a)
their size
b)
their shape
c)
how they move
d)
their source
3.
The diagram represents a wave pattern in a certain medium. Answer the following questions based on the diagram. Referring to Figure 20-1A, the wavelength in the diagram is represented by the distance from:
a)
A to D
b)
B to C
c)
D to F
d)
F to G
4.
- How is a solute different from a solvent in a solution?
a)
The solute is present in a smaller amount.
b)
The solute is present in a greater amount.
c)
The solute is a solid and the solvent is a liquid.
d)
The solute is a liquid and the solvent is a gas.
5.
Sound is a disturbance that travels through a medium as a
a)
longitudinal wave.
b)
surface wave
c)
standing wave
d)
transverse wave
6.
What is one way to increase the solubility of sugar in water?
a)
heat the water
b)
chill the water
c)
increase the amount of sugar
d)
decrease the amount of water
7.
When the surface of a mirror curves inward, like the inside of a bowl, it is called a
a)
plane mirror
b)
convex mirror
c)
concave mirrior
d)
diffuse mirror
8.
The range of electromagnetic waves placed in a certain order is called the
a)
electromagnetic spectrum
b)
electromagnetic wavelength
c)
electromagnetic frequency
d)
electromagnetic field
9.
Which of the following is NOT a property of waves?
a)
frequency
b)
amplitude
c)
speed
d)
weight
10.
The bending of a wave front around a barrier is called:
a)
reflection
b)
refraction
c)
diffraction
d)
absorption
11.
If two unidentified solids of the same texture and color have different solubilities in 100 grams of water at 20°C, you could conclude that
a)
they are the same substance
b)
they are different substances
c)
they have different melting points
d)
their solubilities will be the same if the water temperature is increased
12.
How is pH important during digestion?
a)
. Digestion needs a constant pH to take place.
b)
Different foods have different pH values.
c)
Enzymes react best with acids.
d)
Different enzymes work best at different pH values.
13.
The amount of energy a sound wave carries per second through a unit area is its
a)
loudness
b)
intensity
c)
frequency
d)
pitch
14.
The bending of waves around the edge of a barrier is known as
a)
reflection
b)
refraction
c)
difraction
d)
interference
15.
Which term refers to how high or low a sound seems to a person?
a)
loudness
b)
intensity
c)
frequency
d)
pitch
16.
Two pulses are traveling along a string toward each other as represented in the diagram below:
a)
interference
b)
diffraction
c)
reflection
d)
refraction
17.
The process that breaks down complex molecules of food into smaller particles is called
a)
neutralization
b)
conduction
c)
digestion
d)
solution
18.
The maximum distance that the particles of a medium move from the rest position is the
a)
amplitude of the wave
b)
wavelength of the wave
c)
frequency of the wave
d)
speed of the wave
19.
In a parallel circuit with three bulbs,
a)
the bulbs must all be located on the same branch
b)
there is only one path for the current to take
c)
current from each bulb has its own path.
d)
the overall resistance increases if a new branch is added.
20.
How would a tomato look under blue light?
a)
The tomato would seem to disappear.
b)
The tomato would still appear red.
c)
The tomato would appear black.
d)
The tomato would appear white.
21.
Colored substances that are used to color other materials are called
a)
pigments
b)
leneses
c)
mirages
d)
filters
22.
When a wave hits a surface through which it CANNOT pass and bounces back, it undergoes
a)
reflection
b)
refraction
c)
constructive intereference
d)
destructive interference
23.
Which electromagnetic waves have the longest wavelengths and lowest frequencies?
a)
infrared waves
b)
radio waves
c)
ultraviolet rays
d)
gamma rays
24.
Electromagnetic waves can transfer energy without a(n)
a)
medium
b)
electric field
c)
magnetic field
d)
change in either a magnetic or an electric field
25.
As in the case of unlike magnetic poles, unlike electric charges
a)
attract each other
b)
repel each other
c)
exist in pairs
d)
do not interact
26.
What causes charges to move in a circuit?
a)
voltage
b)
energy
c)
electricity
d)
magnetism
27.
- Which is a characteristic property of acids?
a)
they turn blue litmus paper red
b)
they turn red litmus paper blue
c)
they taste bitter
d)
they do not react with metals
28.
Which of the following colors of light has the highest energy?
a)
red
b)
yellow
c)
blue
d)
violet
29.
What occurs when parallel rays of light hit a rough or bumpy surface?
a)
regular reflection
b)
diffuse reflection
c)
refraction
d)
diffraction
30.
Sound waves travel as
a)
electromagnetic waves
b)
transverse waves
c)
light waves
d)
longitudinal waves
31.
Visible light has a higher frequency than
a)
X-rays
b)
ultraviolet rays
c)
infrared rays
d)
gamma rays
32.
Mechanical waves are created when a source of energy causes a medium to
a)
move
b)
compress
c)
expand
d)
vibrate
33.
Compared to the pH of saliva, the pH of stomach juices is
a)
the same
b)
higher
c)
lower
d)
unpredictable
34.
How does chemical digestion differ from mechanical digestion?
a)
Chemical digestion does not involve the stomach
b)
Chemical digestion only occurs in the small intestine
c)
Chemical digestion is limited to grinding and mashing of food.
d)
Chemical digestion requires enzymes.
35.
In a series circuit with three bulbs, adding another bulb will
a)
make the nearest bulb brighter.
b)
make some of the bulbs dimmer.
c)
make all the bulbs brighter.
d)
make all the bulbs dimmer.
36.
Which waves have some electrical properties and some magnetic properties?
a)
longitudinal waves
b)
transverse waves
c)
mechanical waves
d)
electromagnetic waves
37.
The electromagnetic waves with the highest frequencies are called
a)
radio waves
b)
gamma rays
c)
X-rays
d)
visible light
38.
When you add so much solute that no more dissolves, you have a
a)
saturated solution
b)
unsaturated solution
c)
neutralization
d)
suspension
39.
A represents what part of a wave?
a)
trough
b)
crest
c)
compression
d)
rarefaction
40.
B represents what part of a wave?
a)
trough
b)
crest
c)
compression
d)
rarefaction
41.
What kind of wave is pictured?
a)
transverse
b)
longitudinal
42.
Which is a likely use for a base?
a)
as a vitamin in your food
b)
etching metals for printing
c)
making foods taste sour
d)
making soaps and detergents
43.
The pitch of a sound that you hear depends on the sound wave’s
a)
loudness
b)
frequency
c)
intensity
d)
speed
44.
Magnetic field lines around a bar magnet
a)
are only perpendicular to the magnet
b)
spread out from one pole and curve around to the other.
c)
cross back and forth over one another.
d)
are perfectly straight.
45.
Weak tea is an example of a
a)
dilute solution
b)
concentrated solution
c)
suspension
d)
solvent
46.
What does a neutralization reaction produce?
a)
acids
b)
bases
c)
water and a salt
d)
carbonated water
47.
What happens if you break a magnet in half?
a)
One half will have a north pole only and one half will have a south pole only.
b)
Neither half will have a pole.
c)
Each half will be a new magnet, with both a north and south pole.
d)
Neither half will be able to attract or repel
48.
The interaction between two waves that meet is called
a)
reflection
b)
refraction
c)
diffraction
d)
interference
49.
If you have a solution of a strong acid and a solution of a weak acid of equal concentration and volume, then the
a)
strong acid will have a lower pH
b)
strong acid will have a higher pH
c)
two solutions will have the same pH
d)
weak acid will produce more hydrogen ions
50.
The electromagnetic waves with the shortest wavelength are:
a)
microwaves
b)
gamma rays
c)
radio waves
d)
visible light waves
51.
The bending of light rays as they enter a new medium is called
a)
diffuse reflection
b)
regular reflection
c)
refraction
d)
diffraction
52.
Neutralization is a reaction between a(n)
a)
acid and a base
b)
acid and a metal
c)
base and a salt
d)
salt and water
53.
How would a solute affect the boiling point of water?
a)
The water will boil at a lower temperature.
b)
The water will boil at a higher temperature.
c)
The water will not boil
d)
The boiling point will be the same as the freezing point.
54.
A material that reflects or absorbs any light that strikes it is
a)
opaque
b)
transparent
c)
translucent
d)
concave
55.
Frosted glass and wax paper are
a)
transparent
b)
translucent
c)
clear
d)
opaque
56.
The pH scale measures
a)
the strength of an acid.
b)
the strength of hydrogen ions
c)
the concentration of hydrogen ions.
d)
the concentration of an acid.
57.
In a water solution, how do acids differ from bases?
a)
Acids form hydrogen ions (H + ), while bases form hydroxide ions (OH – ).
b)
Acids turn litmus blue, while bases turn litmus red.
c)
Acids form salts, bust bases do not.
d)
Hydrogen ions (H + ) remain dissolved, but hydroxide ions (OH – ) do not.
58.
A complete, unbroken path through which electric charges can flow is a(n)
a)
electric circuit
b)
electrical resistance
c)
magnetic field line
d)
magnetic pole
59.
According to Ohm’s law, resistance is equal to voltage divided by
a)
time
b)
conduction
c)
current
d)
potential
60.
Clear glass, water, and air are examples of what kind of material?
a)
opaque
b)
fluid
c)
translucent
d)
transparent
61.
A disturbance that transfers energy from place to place is called a
a)
wave
b)
medium
c)
vibration
d)
compression
62.
A cluster of billions of atoms that all have magnetic fields lined up in the same way is known as
a)
magnetic field line
b)
magnetic pole
c)
magnetic domain
d)
permanent magnet
63.
A straw will appear broken in a glass of water because light traveling from air to water is
a)
reflected
b)
refracted
c)
diffused
d)
diffracted
64.
A mixture containing particles that are too small to be seen easily but are large enough to scatter a light beam is called a
a)
solution
b)
colloid
c)
suspension
d)
base
65.
A measure of how well a solute can dissolve in a solvent at a given temperature is that substance’s
a)
saturation point
b)
acidity
c)
solubility
d)
concentration
66.
When a solute is added to a solvent, the freezing point of the solution is
a)
higher than the freezing point of either substance alone
b)
lower than the freezing point of either substance alone.
c)
the same as the freezing point of the solute.
d)
the same as the freezing point of the solvent.
67.
Most of the objects that we see are visible to us because they ____ light.
a)
refract
b)
diffract
c)
reflect
d)
emit
68.
Visible light is an example of
a)
chemical energy
b)
electrical energy
c)
electromagnetic energy
d)
nuclear energy
69.
The changing pitch of a police car’s siren as it moves by you is an example of
a)
the Doppler effect
b)
resonance
c)
the speed of sound
d)
intensity
70.
The region around a magnet where the magnetic force is exerted is known as its
a)
magnetic pole
b)
lodestone
c)
magnetic field
d)
magnetic domain
71.
Magnetic poles that are unlike
a)
attract each other
b)
repel each other
c)
do not interact
d)
point in the same direction
72.
A liquid mixture in which particles can be seen and easily separated by settling or filtration is a
a)
solution
b)
suspension
c)
solvent
d)
solute
100 %
