Doppler Effect

What's this phenomenon?

• Electromagnetic spectrum

• Doppler Effect

• Wavelength

• Amplitude

How can I explain the difference between waves in the Electromagnetic Spectrum?

• Amplitude of the waves

• Crest of the waves

• Frequency of the waves

• Position of the waves

Which colour has the smallest frequency?

• Red

• Green

• Blue

• Purple

What's the name of this phenomenon?

• Compression of the universe

• Blue-shift

• Frequency of the sun

• Red-shift

What's the Hubble's Law?

• A galaxy that is TREE times as far from another, moves away at the same speed.

• A galaxy that is TWICE as far from another, moves away at twice the speed.

• A galaxy that is TREE times as far from another, moves away at twice the speed.

• A galaxy that is TWICE as far from another, moves away at the same speed.

Select three real-life Doppler Effect applications. (Choose three options)

• Physicists to study the composition of stars.

• Doctors looking at the heart with ultrasound.

• Astronauts to see the stars and measure the gravity.

• Policemen with radars to detect speed increase.

Which one of those lenses is a bi-concave?

• A

• D

• B

• None

Which one of those waves have the greatest frequency?

• Red

• Blue and green

• Purple

• Yellow

In the figure. What are the wavelength and amplitude respectively?

• A and D

• C and A

• D and A

• A and C

Which one of those waves have the shortest wavelength?

• Red one

• Green one

• Blue one

• None