General Science Flashcards
1
Q
what is a lunar eclipse
A
occurs when the Moon moves into the Earth’s shadow, causing the Moon to be darkened, sometimes turning the lunar surface a striking red over the course of a few hours
2
Q
what is a solar eclipse
A
happens when the Moon passes between the Sun and Earth, completely blocking the face of the Sun
3
Q
stages in the life of the universe
A
- Primordial Era.
- Stelliferous Era.
- Degenerate Era.
- Black Hole Era.
- Dark Era.
4
Q
what is the redshift
A
an increase in the wavelength, and corresponding decrease in the frequency and photon energy, of electromagnetic radiation
