Quarter 1 and 2 review

Front

What evidence supports the theory of the universe's expansion?

Back

The redshift of light from distant galaxies.

Front

What is a solenoid?

Back

A solenoid is a coil of wire that produces a magnetic field when an electric current passes through it.

Front

What is diffraction?

Back

Diffraction is the bending of waves around obstacles and openings.

Front

How does the abundance of hydrogen and helium support the Big Bang Theory?

Back

Hydrogen and helium are in the same ratio throughout the universe.

Front

What does the Big Bang Theory tell us about the universe?

Back

The entire universe was once condensed in the form of a primeval atom, or a dense mass.

Front

What is cosmic microwave background radiation?

Back

Cosmic microwave background radiation is the afterglow radiation from the Big Bang, filling the universe.

Front

What is gravitational waves?

Back

Gravitational waves are ripples in spacetime caused by some of the most violent and energetic processes in the universe.

Front

What is the significance of black holes in cosmology?

Back

Black holes are regions of spacetime where gravity is so strong that nothing can escape from them, providing insights into the nature of gravity and the universe.

Front

What is the Doppler effect?

Back

The Doppler effect is the change in frequency or wavelength of a wave in relation to an observer moving relative to the wave source.

Front

What is the relationship between wavelength and frequency?

Back

Wavelength and frequency are inversely related; as the wavelength increases, the frequency decreases.