Properties of Electromagnetic Radiation

Questions and Answers

What can photons of X-ray and gamma ray radiation do to matter?

Absorb into matter

Reflect off matter

Ionize matter (correct)

Pass through matter unaffected

Which type of electromagnetic radiation is considered non-ionizing?

Ultraviolet and X-rays

Infrared and gamma rays

X-rays and gamma rays

Radio, infrared, visible, and ultraviolet (correct)

What is a characteristic that distinguishes X-rays and gamma rays from other types of electromagnetic radiation?

Their long wavelengths

Their low energy levels

Their ability to ionize matter (correct)

Their ability to be seen by the human eye

Which of the following types of electromagnetic radiation have enough energy to remove tightly bound electrons from atoms?

X-rays and gamma rays Signup and view all the answers

What is true about the energy levels of X-rays and gamma rays compared to other types of electromagnetic radiation?

They have higher energy levels Signup and view all the answers

What type of radiation does X-ray belong to?

Electromagnetic radiation Signup and view all the answers

What is a major concern associated with X-rays?

Health risks Signup and view all the answers

What is the classification of X-rays based on their ionizing ability?

Strongly ionizing radiation Signup and view all the answers

What is the relationship between X-rays and electromagnetic radiation?

X-rays are a type of electromagnetic radiation Signup and view all the answers

What can be said about the application of X-rays in research?

It is a valuable tool with various applications Signup and view all the answers

What was Roentgen able to see on the screen during his experiment?

The bones in his hand Signup and view all the answers

What happened to the electrons as they streamed across the distance between the cathode and anode?

They accelerated to a very high velocity Signup and view all the answers

What was the purpose of the Crookes tube in Roentgen's experiment?

To detect X-rays Signup and view all the answers

What was unknown to scientists at the time of Roentgen's experiment?

The acceleration of electrons across a distance Signup and view all the answers

What was Roentgen doing when he discovered X-rays?

Conducting an experiment with a Crookes tube Signup and view all the answers

What is the result of increasing the voltage applied to the tube?

The electron stream velocity increases Signup and view all the answers

How does the voltage applied to the tube affect the electron stream?

It speeds up the electron stream Signup and view all the answers

What is the relationship between voltage and electron stream velocity?

Voltage and electron stream velocity are directly proportional Signup and view all the answers

What happens to the electron stream velocity when the voltage is increased?

It increases Signup and view all the answers

How is the acceleration of the electron stream controlled?

By the voltage applied to the tube Signup and view all the answers

What is the frequency range of Ultra Violet radiation?

1 x 10^16 Hz Signup and view all the answers

What is the wavelength of Ultra Violet radiation?

1 x 10^-7m Signup and view all the answers

What is a consequence of exposure to Ultra Violet radiation?

Sunburn Signup and view all the answers

Which of the following types of radiation has a higher frequency than Ultra Violet radiation?

X-rays Signup and view all the answers

What is the relationship between the frequency and wavelength of Ultra Violet radiation?

As frequency increases, wavelength decreases Signup and view all the answers

Study Notes

Electromagnetic Radiation (EM)

X-rays are a type of EM radiation
EM radiation can be classified into two categories:
- Ionizing: X-rays and gamma rays can ionize matter
- Non-ionizing: radio, infrared, visible, ultraviolet cannot ionize matter

X-rays in Research and Health Risks

X-rays are a valuable tool in research, but they pose health risks
Wilhelm Röntgen discovered X-rays through an experiment involving a Crookes tube and a screen, allowing him to see the bones in his hand

Acceleration of Electrons

Electrons streaming across the distance between the cathode and anode accelerate to a very high velocity
The acceleration of electrons is controlled by the voltage applied to the tube
The higher the voltage, the greater the velocity of the electron stream

Frequency and Wavelength

X-rays have a frequency of 1 x 10^16 Hz
Ultraviolet radiation has a wavelength of 1 x 10^-7m and is responsible for people getting a tan or sunburn

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Description

Understand the properties of electromagnetic radiation, including X-rays, gamma rays, and other forms of radiation. Learn about ionizing and non-ionizing radiation and their effects on matter.