Geoscience-midterm-practice1

Front

What is Amplitude in a wave?

Back

Amplitude is the maximum height of a wave from its rest position, indicating the energy of the wave.

Front

What does the Cosmic Microwave Background Radiation (CMBR) represent?

Back

CMBR represents leftover energy from the early Universe, specifically from the Big Bang.

Front

What is the definition of Half-life in radioactive decay?

Back

Half-life is the amount of time it takes for half of a mass of radioactive matter to decay.

Front

What happens to a yellow star like our Sun after it dies according to the HR diagram?

Back

It will become a White Dwarf.

Front

What does Frequency mean in the context of waves?

Back

Frequency is the number of wave cycles passing a point in one second.

Front

What is Wavelength in a wave?

Back

Wavelength is the distance between two consecutive points that are in phase on a wave, such as crest to crest.

Front

What is the significance of the HR diagram in astronomy?

Back

The HR diagram classifies stars based on their luminosity and temperature, showing their life cycle stages.

Front

What is the Big Bang Theory?

Back

The Big Bang Theory is the leading explanation for the origin of the universe, stating it began from a singularity and expanded.

Front

What is the difference between a Red Giant and a White Dwarf?

Back

A Red Giant is a late stage in a star's life where it expands and cools, while a White Dwarf is the remnant core left after a star has shed its outer layers.

Front

What is the role of Cosmic Background Radiation in understanding the universe?

Back

Cosmic Background Radiation provides evidence for the Big Bang and helps scientists understand the early conditions of the universe.