Waves in Space

• Science
• Lower Secondary (Key Stage 3)

Using Waves to Learn about Space

What are the two types of waves?

1. Longitudinal and Maximillian
2. Transverse and Electromagnetic
3. Longitudinal and Transverse
4. Transverse and Equilateral

Sound waves are _____________waves

1. Parallel
2. Electromagnetic
3. Transverse
4. Longitudinal

Which organ detects light in humans

1. Tongue
2. Ear
3. Nose
4. Eyes

The larger the amplitude of the waves, the __________ the sound is.

1. Louder
2. Softer
3. Higher pitched
4. Lower pitched

Frequency affects the___________ of the sound

1. Amplitude
2. Period
3. Pitch
4. Volume

What is the name given to the maximum height of the wave?

1. Wavelength
2. Frequency
3. Trough
4. Amplitude

Which organ detects sound in humans

1. Ear
2. Nose
3. Tongue
4. Eyes

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

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

What is the definition of a light year?

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

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

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.