Physics 6.2.9

Question 1

What is the Main Use of ‘Radio Waves’? (1)

Answer 1

Communication (Radio & TV).

Question 2

What is the Main Use of ‘Microwaves’? (2)

Answer 2

-Heating Food.

-Communication (WiFi, Mobile Phones, Satellites).

Question 3

What is the Main Use of ‘Infrared Waves’? (8)

Answer 3

-Remote Controls.

-Fibre Optic Communication.

-Thermal Imagining (Medicine & Industry).

-Night Vision.

-Heating or Cooking.

-Motion Sensors.

-Electrical Heaters.

-Infrared Cameras.

Question 4

What is the Main Use of ‘Visible Light’? (3)

Answer 4

-Seeing.

-Taking Photos/Videos.

-Fibre Optic Communications.

Question 5

What is the Main Use of ‘Ultraviolet’? (3)

Answer 5

-Security Marking (Fluorescence).

-Fluorescent Bulbs (Energy Efficient Lamps).

-Getting a Suntan.

Question 6

What is the Main Use of ‘X-Rays’? (1)

Answer 6

X-Ray Images.

Question 7

What is the Main Use of ‘Gamma Rays’? (2)

Answer 7

-Sterilising Medical Instruments.

-Treating Cancer.