How Hertz produced Radiowaves

Multiple Choice

Who was first person to transmit and receive controlled radio waves?

• Heinrich Hertz

• James Clerk Maxwell

• Isaac Newton

• Albert Einstein

Multiple Choice

Who is the proponent of THEORY OF ELECTROMAGNETISM?

• Heinrich Hertz

• James Clerk Maxwell

• Isaac Newton

• Albert Einstein

Multiple Choice

What is the piece of electrical apparatus used by Hertz to produce electric sparks by magnetic induction?

• Induction Coil

• Magnetic Induction

• Riess Spirals

• All of the above

Multiple Choice

Spirals produced electric sparks by a process called

• Induction Coil

• Magnetic Induction

• Riess Spirals

• All of the above

Multiple Choice

What did Hertz use to generate sparks?

• Induction Coil

• Magnetic Induction

• Riess Spirals

• All of the above

Match

Match the following.

• AC

• DC

• Low voltage

• High voltage

Electrical Outlets

Batteries

DC

AC

• Electrical Outlets

• Batteries

• DC

• AC

Multiple Choice

How does an induction coil power a car’s spark plugs?

• It transforms low voltage DC electricity to high voltage AC

• It transforms high voltage AC electricity to low voltage DC

Drag and Drop

If the distance of CA and CB are the same, there would be ​

Placeholder

; however if the distance of CA and CB are not the same, there would be​

Placeholder

Drag these tiles and drop them in the correct blank above

no spark

a spark

electricity

no electricity

Drag and Drop

No voltage difference would result to ​

Placeholder

while having a voltage difference will result to ​

Placeholder

. If the distance of

Drag these tiles and drop them in the correct blank above

no spark

a spark

electricity

no electricity

Multiple Choice

What is produced when produced whenever electric charges are accelerated?

• Resonance

• Amplitude

• Frequency

• Wavelength

Multiple Choice

The unit of frequency is

• Hertz

• Ampere

• Joule

• Kilojoule

Multiple Choice

100 mHz is equal to a resonant frequency of

• 100 million per second

• 1 million per second

• 1 million per hour

• 100 million per hour

Multiple Choice

In Hertz’s circuit, the vibrations produced were not sound but vibrations of ​

​

• electrical charges

• sound

• waves

• light

Dropdown

As predicted by Maxwell, oscillating electric charges produced ​

Select answer

​https://www.youtube.com/watch?v=QZXYFr5YHew

Open Ended

Why was Guglielmo Marconi the one granted patent for wireless communications and not Hertz?

Multiple Choice

Who was granted a patent for wireless communication?

• Heinrich Hertz

• Isaac Newton

• Guglielmo Marconi

• Albert Einstein

Multiple Choice

In present day, what is being used to generate radio waves?

• Sparks

• Vacuum tubes

• Transistors

• Transmitters

Match

Match the following.

• Heinrich Hertz
• October 1886

• Magnetic induction

• Electrical charge

​ He was the first person to transmit and receive controlled radio waves.

The year Hertz see an electrical spark and started a train of thought that would end up

Spirals produced electric sparks by a process called

In Hertz’s circuit, the vibrations produced were not sound but vibrations of

• ​ He was the first person to transmit and receive controlled radio waves.

• The year Hertz see an electrical spark and started a train of thought that would end up

• Spirals produced electric sparks by a process called

• In Hertz’s circuit, the vibrations produced were not sound but vibrations of

Match

Match the following.

• Early 1900s

• Hertz

• Electromagnetic/ Radio Waves

• 100 MHz

The year technically minded people build their own spark transmitted at home

The unit of frequency

As predicted by Maxwell, the oscillating electric charge produced is known as

The frequency of vibration in Hertz experiment

• The year technically minded people build their own spark transmitted at home

• The unit of frequency

• As predicted by Maxwell, the oscillating electric charge produced is known as

• The frequency of vibration in Hertz experiment