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Sci 8 Sound, Heat, and Light

Total questions: 78

Worksheet time: 39mins

Name
Class
Date
1.

What is the wavelength range of visible light?

a)

800 nm to 600 nm

b)

700 nm to 400 nm

c)

500 nm to 400 nm

d)

400 nm to 300 nm

2.

Which color of visible light has the longest wavelength?

a)

Violet

b)

Green

c)

Blue

d)

Red

3.

What is the property of light that refers to the bouncing back of waves?

a)

Refraction

b)

Reflection

c)

Diffraction

d)

Dispersion

4.

What happens to light when it passes from air to liquid?

a)

It reflects

b)

It refracts

c)

It diffracts

d)

It polarizes

5.

What type of wave is light classified as?

a)

Longitudinal wave

b)

Sound wave

c)

Transverse wave

d)

Mechanical wave

6.

What type of wave is sound classified as?

a)

Longitudinal wave

b)

Sound wave

c)

Transverse wave

d)

Mechanical wave

7.

What enables you to see colors?

a)

Rod cells

b)

Retina

c)

Cone cells

d)

Cornea

8.

Why do objects appear white?

a)

They scatter blue light

b)

They emit red light

c)

They reflect all colors

d)

They absorb all colors

9.

What is the bending of light when it passes through a gap called?

a)

Reflection

b)

Diffraction

c)

Refraction

d)

Dispersion

10.

What is the term for the spreading of white light into its full spectrum?

a)

Reflection

b)

Refraction

c)

Diffraction

d)

Dispersion

11.

What color of light has the highest frequency?

a)

Violet

b)

Red

c)

Green

d)

Blue

12.

What is the distance between one point on a wave and the nearest point moving with the same speed called?

a)

Frequency

b)

Amplitude

c)

Wavelength

d)

Velocity

13.

What causes the sky to appear blue?

a)

Scattering of red light

b)

Scattering of blue light

c)

Reflection of light

d)

Absorption of light

14.

What is the flexible part of the eye that changes shape to focus on objects?

a)

Cornea

b)

Retina

c)

Lens

d)

Pupil

15.

What is the term for light waves that vibrate in one direction?

a)

Diffraction

b)

Polarization

c)

Refraction

d)

Reflection

16.

What happens to the amplitude of a wave as the energy increases?

a)

It increases

b)

It fluctuates

c)

It remains the same

d)

It decreases

17.

What is a sound wave?

a)

A type of light wave

b)

A type of water wave

c)

A type of heat wave

d)

A type of wave that travels through air or other materials and carries sound

18.

How do sound waves travel through a medium?

a)

By the emission of light waves

b)

By the absorption of thermal energy

c)

By the motion of particles in the medium

d)

By the release of electromagnetic radiation

19.

Which of the following materials is the best conductor of sound?

a)

Air

b)

Steel

c)

Water

d)

Rubber

20.

What best describes sound waves?

a)

A wave that carries light

b)

A wave that carries heat

c)

A wave that carries sound

d)

A wave that carries electricity

21.

What happens to the charges when the voltage of the battery is increased?

a)
The charges increase in movement, leading to a higher current.
b)
The charges reverse direction, causing a negative current.
c)
The charges remain unchanged regardless of the voltage increase.
d)
The charges decrease in movement, leading to a lower current.
22.

Find the resistance in Ω of a single motor horn if it has a voltage of 12 V and current of 8.0 A.

a)
2.0 Ω
b)
0.75 Ω
c)
1.5 Ω
d)
3.0 Ω
23.

If a power source has a resistance of 44 Ω and a current of 5.0 A, what is its voltage?

a)
110 V
b)
220 V
c)
180 V
d)
300 V
24.

voltage

a)
Voltage is measured in amperes (A).
b)
Voltage is measured in volts (V).
c)
Voltage is a measure of resistance.
d)
Voltage is measured in ohms (Ω).
25.

Current

a)

Volt

b)

Ampere

c)

Ohm

d)

Resistance

26.

Resistance

a)
Resistance is measured in ohms (Ω).
b)
Resistance is measured in watts (W).
c)
Resistance is measured in amperes (A).
d)
Resistance is measured in volts (V).
27.

Ohm’s law tells us that to increase the amount of current in a circuit, we can ________.

a)
increase the capacitance
b)
decrease the voltage
c)
increase the resistance
d)

increase the voltage

28.

Ohm’s law tells us that to increase the amount of current in a circuit, we can ________.

a)

lower the voltage

b)

lower the resistance

c)

increase the resistance

d)
increase the capacitance
29.

It is the rate of flow of electric charges from one point to another in a circuit.

a)
Electric power
b)
Electric current
c)
Electric resistance
d)
Electric voltage
30.

An instrument used to measure the current in the circuit.

a)
Ohmmeter
b)
Ammeter
c)
Capacitor
d)
Voltmeter
31.

It is the pressure from a power source that pushes charged electrons.

a)
Capacitance
b)

Voltage

c)
Current
d)
Resistance
32.

It is what makes a current move.

a)
Capacitance
b)

Voltage

c)
Current
d)
Resistance
33.

An instrument used to measure the voltage in a circuit.

a)
Voltmeter
b)
Wattmeter
c)
Ohmmeter
d)
Ammeter
34.

the opposition to the flow of current wire

a)
Resistance
b)
Current
c)
Voltage
d)
Capacitance
35.

It provides resistance to the circuit.

a)
Resistor
b)
Diode
c)
Inductor
d)
Capacitor
36.

Convert electric energy to light energy

a)
Use a light bulb or LED to convert electric energy to light energy.
b)
Use a toaster to convert electric energy to light energy.
c)
Use a refrigerator to convert electric energy to light energy.
d)
Use a microwave to convert electric energy to light energy.
37.

It is a wave that carries energy from one place to another through different mediums.

a)
Particle
b)
Sound
c)

Heat

d)
Light
38.

It is produced by the vibrations of objects.

a)
Light
b)
Sound
c)
Electricity
d)
Heat
39.

long wavelength = _____ pitch

a)
variable
b)
medium
c)
low
d)
high
40.

Sounds with frequencies below 20 hertz are called ____.

a)
ultrasound
b)
audible sound
c)
white noise
d)
infrasound
41.

Infrasound is too low-pitched for humans to hear.

a)

true

b)

false

42.

Sounds with frequencies above 20,000 hertz are called ________.

a)

inaudible

b)

infrasound

c)

ultrasound

d)
audible
43.

small amplitude = ____ sound

a)
sharp
b)
loud
c)
high pitch
d)
quiet
44.

Intensity (measured in dB) results from two factors: the amplitude of the sound waves and the _____ of the source of sound.

a)
distance
b)
pitch
c)
duration
d)
frequency
45.

The particles of ____ are tightly packed making it hard for the particles to move.

a)
liquids
b)
gases
c)
plasma
d)
solids
46.

The smaller the space between particles, the ____ the sound being transmitted.

a)
weaker
b)
slower
c)
faster
d)
more distorted
47.

The particles of ____ have few spaces in between, allowing them to move to very short distances.

a)
gas
b)
solid
c)
plasma
d)
liquid
48.

The particles of gases are spread apart, making it possible for the particles to move to ____ distances.

a)
fixed
b)

shorter

c)

farther

d)

equal

49.

It is the average kinetic energy of a system.

a)

energy

b)

temperature

c)

light

d)

heat

50.

Which particles of the boiling water would have greater kinetic energy?

a)

The particles near the surface would have higher kinetic energy compared to the particles near the source of heat.

b)

The particles near the source of heat would have higher kinetic energy compared to the particles near the surface.

c)

All particles in boiling water have the same kinetic energy.

51.

Kinetic energy and temperature have ____ proportional relationship.

a)
a quadratic
b)

an indirect

c)
a direct
d)
no
52.

It is defined as energy in transit.

a)
Heat
b)

Light

c)
Energy
d)

Sound

53.

Heat is measured in _____.

a)

fahrenheit

b)

kelvin

c)

celsius

d)
joules
54.

Heat flows from ____ bodies or objects to ____ ones.

a)

colder; warmer

b)
colder; hotter
c)
neutral; extreme
d)

hotter; colder

55.

What will happen if If there is no temperature difference?

a)
Heat flows from cold to hot.
b)
No heat transfer occurs.
c)
Temperature remains constant.
d)
Heat transfer increases.
56.

When will an object stop from giving off heat to a colder body?

a)
When the object is removed from the colder body.
b)
When thermal equilibrium is reached.
c)
When the colder body absorbs all the heat.
d)
When the object is heated further.
57.

Melting

a)

Heat absorbed

b)

Heat released

58.

Freezing

a)

Heat absorbed

b)

Heat released

59.

Condensation

a)

Heat absorbed

b)

Heat released

60.

Deposition

a)

Heat absorbed

b)

Heat released

61.

Evaporation

a)

Heat absorbed

b)

Heat released

62.

Sublimation

a)

Heat absorbed

b)

Heat released

63.

It is the general increase in the volume of a material as its temperature is increased.

a)
Thermal expansion
b)

Thermal equiibrium

c)
Thermal contraction
d)
Thermal insulation
64.

It is a decrease in a material's volume when its temperature decreases.

a)
Thermal expansion
b)

Thermal equiibrium

c)
Thermal contraction
d)
Thermal insulation
65.

When the substances expand or contract, which of the following changes?

a)

the size of the particles

b)

the spaces between the particles

c)

the temperature of the particles

d)

nothing changes

66.

The ____ of a wave is the number of wavelengths that pass by a point each second (or certain amount of time).

a)
wavelength
b)
amplitude
c)
frequency
d)
speed
67.

The ____ of a wave is a measure of the distance between a line through the middle of a wave and a crest or trough.

a)
period
b)
amplitude
c)
wavelength
d)
frequency
68.

As wavelength increases, the frequency and energy of the wave ____.

a)

increase

b)

decrease

c)

stay the same

69.

Arrange the colors of visible light according to wavelength from longest to shortest.

a)

violet blue cyan green yellow orange red

b)

red yellow cyan green blue violet orange

c)

red orange yellow green cyan blue violet

d)

violet cyan blue green orange yellow red

70.

In terms of frequency, which has the highest frequency?

a)

cyan

b)

green

c)

red

d)

violet

71.

The lens becomes ____ when you focus on a distant object.

a)
rounder
b)
flatter
c)
thicker
d)
more curved
72.

The lens becomes ____ when you focus on an object nearby.

a)

more curved

b)
heavier
c)
longer
d)

flatter

73.

The ____ of the light waves that are reflected determine the object’s color

a)
wavelengths
b)
phases
c)
amplitudes
d)
frequencies
74.

Which reflects all colors?

a)
Black light
b)
Red light
c)
Blue light
d)
White light
75.

____ objects absorb all colors so no light is reflected.

a)
Black
b)
White
c)
Red
d)
Blue
76.

____ cells are sensitive to dim light, and ____ cells enable you to see colors.

a)

Bacilli; Neurons

b)

Neurons; Bacilli

c)

Cones; Rods

d)
Rods; Cones
77.

The sky appears blue because molecules in the atmosphere scatter ____ wavelengths of light, such as blue and violet.

a)
longer
b)
shorter
c)
infrared
d)
medium
78.

We see sunsets as orange or red because, at ____ angles, the atmosphere scatters shorter wavelengths like blue, leaving the longer red and orange wavelengths to reach our eyes directly.

a)
vertical
b)
medium
c)
low
d)
high