EMS + Redshift

Front

What is cosmic background radiation?

Back

Cosmic background radiation is the thermal energy left over from the Big Bang, detectable as a faint glow in the universe, often observed as static on TV sets.

Front

What does the Big Bang theory explain?

Back

The Big Bang theory explains the beginning of the universe as an expansion of space, not an explosion in space.

Front

Which type of radiation has the longest wavelength?

Back

TV signals have the longest wavelength compared to infrared, indigo, and gamma rays.

Front

What happens to frequency and energy as wavelength increases?

Back

As wavelength increases, frequency decreases and energy decreases.

Front

Which color of light has the most energy?

Back

Violet light has the most energy among the colors red, blue, green, and violet.

Front

Define wavelength.

Back

Wavelength is the distance between successive crests of a wave, typically measured in meters.

Front

What is frequency in the context of waves?

Back

Frequency is the number of waves that pass a given point in one second, measured in hertz (Hz).

Front

Explain the relationship between wavelength and energy.

Back

The relationship is inversely proportional: as wavelength increases, energy decreases.

Front

What is the electromagnetic spectrum?

Back

The electromagnetic spectrum is the range of all types of electromagnetic radiation, from radio waves to gamma rays.

Front

What is the significance of the cosmic microwave background radiation?

Back

It provides evidence for the Big Bang theory and helps scientists understand the early universe.