Day 27 (physics)

Question 1

What is a moon?

Answer 1

A body which orbits a planet

Question 2

What is a planet

Answer 2

A body which orbits a star

Question 3

What is the orbital time period of a planet?

Answer 3

Time taken to complete one orbit of another object

Question 4

What is the name given to the sun and all of the orbiting planets?

Answer 4

Solar system

Question 5

How is the value of “g” related to the radius of a planet?

Answer 5

The bigger the radius the smaller the value of “g”

Question 6

What force causes one object to orbit another?

Answer 6

Gravitational force of attraction

Question 7

What is the shape of a planet’s orbit?

Answer 7

Circular

Question 8

What is the shape of a comets orbit?

Answer 8

Elliptical

Question 9

What is the definition of wave speed?

Answer 9

The distance travelled by the wave per second

Question 10

What is the definition of frequency?

Answer 10

The number of cycles per second

Question 11

Which electromagnetic wave is used to check luggage at an airport?

Answer 11

X-rays

Question 12

Which electromagnetic wave is used to tan the skin on a sun bed?

Answer 12

Ultra violet

Question 13

Which electromagnetic wave can bounce off the ionosphere so is used to transmit information across a country?

Answer 13

Radio

Question 14

Which electromagnetic wave is emitted by a space satellite?

Answer 14

Microwaves

Question 15

Which electromagnetic wave is emitted by a mobile phone?

Answer 15

Microwaves

Question 16

Which electromagnetic wave is emitted by a toaster?

Answer 16

Infra-red

Question 17

What is the unit of wavelength?

Answer 17

M (metres)

Question 18

What is the unit of wave speed?

Answer 18

m/s

Question 19

what is the symbol used for wave speed

Answer 19

V