# Waves in Space

Using Waves to Learn about Space
1 / 27
Slide 1: Tekstslide
ScienceLower Secondary (Key Stage 3)

In deze les zitten 27 slides, met interactieve quizzen, tekstslides en 2 videos.

Lesduur is: 60 min

## Onderdelen in deze les

Using Waves to Learn about Space

#### Slide 1 -Tekstslide

What are the two types of waves?
A
Longitudinal and Maximillian
B
Transverse and Electromagnetic
C
Longitudinal and Transverse
D
Transverse and Equilateral

#### Slide 2 -Quizvraag

Sound waves are _____________waves
A
Parallel
B
Electromagnetic
C
Transverse
D
Longitudinal

#### Slide 3 -Quizvraag

Which organ detects light in humans
A
Tongue
B
Ear
C
Nose
D
Eyes

#### Slide 4 -Quizvraag

The larger the amplitude of the waves, the __________ the sound is.
A
Louder
B
Softer
C
Higher pitched
D
Lower pitched

#### Slide 5 -Quizvraag

Frequency affects the___________ of the sound
A
Amplitude
B
Period
C
Pitch
D
Volume

#### Slide 6 -Quizvraag

What is the name given to the maximum height of the wave?
A
Wavelength
B
Frequency
C
Trough
D
Amplitude

#### Slide 7 -Quizvraag

Which organ detects sound in humans
A
Ear
B
Nose
C
Tongue
D
Eyes

A

#### Slide 13 -Quizvraag

If Proxima Centauri is 4.2 light years away, how long does it take its light to reach us?

#### Slide 14 -Open vraag

It takes over 100,000 years for light to cross our galaxy, the Milky Way, how big is our galaxy?

#### Slide 16 -Tekstslide

What is the definition of a light year?

#### Slide 17 -Open vraag

1. If the Earth is 150,000,000 Km (1.5 x 10exp11 m) from Earth and light from the Sun takes 8 minutes to get to Earth, use the equation speed = distance / time to calculate the speed of light in m/s (metres per second)
Complete these calculation questions in your books
2. Use your answer to question 1. above and the equation speed=distance/time to calculate a light year in km

#### Slide 21 -Tekstslide

Give 2 reasons we are able to get more information from space than in the past:

#### Slide 24 -Tekstslide

How are telescopes used to give us information about the universe?
1. How are telescopes used to give us information about the universe?
Complete these questions in your exercise books
2. Suggest why we cannot observe sounds from other planets in our solar system.
3.  Use the diagram to suggest why large telescopes which collect visible light to explore the Universe are usually placed near the tops of mountains.