Quiz about Semester 2 Final

Question 1

A ___________ interprets the signal

Accepted Answer

Receiver

Answer

Transmitter

Answer

Pitcher

Answer

Radio

Question 2

A _________ is a disturbance that transfers energy from one place to another without transferring matter.

Accepted Answer

Wave

Answer

Frequency

Answer

Amplitude

Answer

Hertz

Question 3

___________ is the energy due to motion.

Accepted Answer

kinetic

Answer

potential

Answer

gravitational

Answer

thermal

Question 4

When you increase the speed of an object, the kinetic energy increases by _________ the factor.

Accepted Answer

the square of

Answer

twice

Answer

thrice

Answer

one half

Question 5

A toy car travels 10 cm east and 5 cm west. Calculate the distance the car traveled.

Accepted Answer

15cm

Answer

5cm

Question 6

A toy car travels 10 cm east and 5 cm west. Calculate the displacement.

Accepted Answer

5 cm

Answer

15 cm

Question 7

A toy car travels 10 cm west, 10 cm north, 10 cm east, and 15 cm south. Calculate the distance that the car traveled.

Accepted Answer

45 cm

Answer

25 cm

Question 8

A toy car travels 10 cm west, 10 cm north, 10 cm east, and 15 cm south. Calculate the displacement.

Accepted Answer

5 cm

Answer

45 cm

Question 9

The pitchers mound in baseball is 100 m from the plate. It takes 5 seconds for a pitch to reach the plate. How fast is the pitch?

Accepted Answer

20 m/s

Answer

500 m/s

Question 10

The energy contained in a rubber band is called ________________.

Accepted Answer

potential energy

Answer

gravitational potential energy

Answer

kinetic energy

Answer

normal energy

Question 11

The amount of potential energy an object has depends on the __________ of objects or particles.

Accepted Answer

position

Answer

motion

Answer

mass

Answer

speed

Question 12

If you drive 100 km/hr 8 hours, how far will you go?

Accepted Answer

800 km

Answer

800 years

Question 13

Billy Bob is 40 feet away from his car. It takes him 40 seconds to run to his car. How fast is Billy Bob?

Accepted Answer

1 ft/s

Answer

1600 ft/s

Question 14

Determine the net force on the box in the free-body diagram. (Be sure to include the correct units.)

Accepted Answer

5 N

Answer

7 N

Answer

2 N

Answer

9 N

Question 15

Determine if the forces are balanced or unbalanced.

Accepted Answer

Unbalanced

Answer

Balanced

Question 16

Determine the net force on the box in the free-body diagram. (Be sure to include the correct units.)

Accepted Answer

0 N

Answer

4 N

Answer

8 N

Question 17

Determine whether the forces are balanced or unbalanced.

Accepted Answer

Balanced

Answer

Unbalanced

Question 18

Determine the net force on the box in the free-body diagram. (Be sure to include the correct units.)

Accepted Answer

6 N

Answer

3 N

Answer

0 N

Question 19

Determine whether the forces are balanced or unbalanced.

Accepted Answer

Unbalanced

Answer

Balanced

Question 20

The more you change its shape, the more ____________ energy the spring contains.

Accepted Answer

potential

Answer

kinetic

Answer

gravitational potential

Answer

electrical

Question 21

A _________ is a back-and-forth or an up-and-down movement of an object.

Accepted Answer

Vibration

Answer

Wave

Answer

Amplitude

Answer

Wavelength

Question 22

A material in which a wave travels is called a ___________.

Accepted Answer

Medium

Answer

Vaccuum

Answer

Space

Answer

Amplitude

Question 23

The regions of a longitudinal wave where the particles in the medium are closest together are ________.

Accepted Answer

Compressions

Answer

Rarefactions

Question 24

The regions of a longitudinal wave where the particles of the medium are farthest apart are ____________.

Accepted Answer

Rarefactions

Answer

Compressions

Question 25

For any wave, the larger the amplitude, the more ________ the wave carries.

Accepted Answer

Energy

Answer

Weight

Answer

Crest

Answer

Trough

Question 26

All the following are examples of potential energy due to forces in fields, except:

Accepted Answer

Elastic potential energy

Answer

Electric potential energy

Answer

Gravitational potential energy

Answer

Magnetic potential energy

Question 27

________ is the bouncing of a wave off a surface.

Accepted Answer

Reflection

Answer

Bouoyancy

Answer

Absorption

Answer

Diffraction

Question 28

_______ is the transfer of energy by a wave to the medium through which it travels.

Accepted Answer

Absorption

Answer

Bouyancy

Answer

Reflection

Answer

Diffraction

Question 29

Without ________ we would not hear sound waves on the other side of doors.

Accepted Answer

Transmission

Answer

Reflection

Answer

Absorption

Answer

Diffraction

Question 30

The speed of a sound wave depends on the material in which it travels.

Accepted Answer

True

Answer

False

Question 31

The _____ of a material also affects the speed of a sound wave.

Accepted Answer

Temperature

Answer

Reflectivity

Answer

Solubility

Answer

Softness

Question 32

The potential energy of an object _____________ as its height increases.

Accepted Answer

increases

Answer

decreases

Answer

stays the same

Question 33

_________ is the change in direction of a wave when it travels by the edge of an object or through an opening.

Accepted Answer

Diffraction

Answer

Reflection

Answer

Transmission

Answer

Refraction

Question 34

All the following about diffraction are true, except: _____

Accepted Answer

Less occurs as the size of the object or opening becomes similar in size to the wavelength of the wave.

Answer

Causes waves to travel around the edges of an object.

Answer

Causes waves to spread out after they travel through an opening.

Question 35

How many main parts are there in the ear?

Accepted Answer

3

Answer

1

Answer

2

Answer

4

Answer

5

Question 36

Temperature can affect the speed of mechanical waves.

Accepted Answer

True

Answer

False

Question 37

Sound waves travel at the same speed in solids, liquids, and gases.

Accepted Answer

False

Answer

True

Question 38

A signal can be all of the following, except:

Accepted Answer

Convex

Answer

Stored

Answer

Encoded

Answer

Transmitted

Question 39

An advantage of transmitting information with waves is that they do not permanently move ___________.

Accepted Answer

Matter

Answer

Waves

Answer

Light

Answer

Sound

Question 40

A(n) ____________ is a thin strand of glass or plastic that can transmit a beam of light over long distances.

Accepted Answer

Optical Fiber

Answer

Radio wave

Answer

Sound wave

Answer

Light wave

Question 41

Two ways to modulate a wave are to change the wave's __________ or the wave's ___________.

Accepted Answer

Frequency (FM); Amplitude (AM)

Answer

Amplitude (AM); Wavelength (XM)

Answer

Frequency (FM); Wavelength (XM)

Answer

Amplitude (AM); Speed (SM)

Question 42

When a pendulum is swinging, it has mass and speed. So, it has _______________.

Accepted Answer

Kinetic energy

Answer

Gravitational potential energy

Answer

Mechanical energy

Question 43

Microphone feedback happens when __________ signals interfere with each other.

Accepted Answer

Electronic

Answer

Microwave

Answer

Digital

Answer

Sound

Question 44

The information in signals deteriorates as noise ______________.

Accepted Answer

Increases

Answer

Decreases

Question 45

Radio signals are _________.

Accepted Answer

Analog

Answer

Digital

Question 46

A digital thermometer displays _______________ values. Each value has a specific amount and is not __________.

Accepted Answer

Discrete; continuous

Answer

Abstract; continuous

Answer

Discrete; variable

Answer

Abstract; variable

Question 47

A signal to or from a computer is encoded into _____________, such as the two values--on(1) or off(0).

Accepted Answer

Binary numbers

Answer

Morse code

Answer

Braille

Question 48

A device that receives and translates a digital signal is only expecting one of the two values, __________________.

Accepted Answer

On or Off

Answer

Yes or No

Answer

Right or Wrong

Answer

Left or Right

Question 49

Your computer saves music as _____________ information.

Accepted Answer

Digital

Answer

Analog

Answer

Sirius

Question 50

The thermometer calculates the temperature based on the _____________, and displays the value.

Accepted Answer

Resistance

Answer

Heat

Answer

Moving particles

Answer

Current

Question 51

For a signal to be understood, the information is decoded, then sent.

Accepted Answer

False

Answer

True

Question 52

Signals can be transmitted long distances by using electromagnetic waves such as radio waves, microwaves, or light waves.

Accepted Answer

True

Answer

False

Question 53

As the ball moves downward, its potential energy _____________ because its height decreases.

Accepted Answer

decreases

Answer

increases

Answer

stays the same

Question 54

Almost every time you make a phone call, use a computer, or watch a television show, you are using electromagnetic technology.

Accepted Answer

True

Answer

False

Question 55

Electromagnetic waves travel slowly.

Accepted Answer

False

Answer

True

Question 56

As a wave moves closer to its source, it can mix with other signals.

Accepted Answer

False

Answer

True

Question 57

A signal that changes continuously over time, such as a clock, is a digital signal.

Accepted Answer

False

Answer

True

Question 58

Think about a radio that does not sound clear. The radio sent the signal correctly, but noise accumulated on the signal.

Accepted Answer

True

Answer

False

Question 59

The information in the signal is converted into numbers or digits.

Accepted Answer

True

Answer

False

Question 60

A digital photo holds one color value at one location called a pixel.

Accepted Answer

True

Answer

False

Question 61

Sounds and images sent by digital signals are usually less clear than those sent by analog signals.

Accepted Answer

False

Answer

True

Question 62

To retrieve digital information, the device you are using must be able to transmit the specific digital signal.

Accepted Answer

False

Answer

True

Question 63

The advancement of digital technology leads to further advancement of science.

Accepted Answer

True

Answer

False

Question 64

Ferromagnetic elements include all of the following, except:

Accepted Answer

silicon

Answer

iron

Answer

nickel

Answer

Cobalt

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