RES Astronomy Vocab

Front

Aphelion

Back

Point in orbit away from the Sun, when an orbiting object moves slowest (for Earth this occurs in July)

Front

Axis/Axial Tilt

Back

Earth's is tilted on 23.5 degrees on its axis, this causes the seasons

Front

Doppler Effect

Back

Apparent change in wavelength; objects moving away show red shift and increasing wavelength

Front

Nuclear Fusion

Back

How stars make energy, Hydrogen + Hydrogen = Helium + energy

Front

Constellations

Back

Patterns that people have drawn in the stars

Front

Heliocentric

Back

Sun is at the middle of our solar system

Front

Epicenter

Back

Where the earthquake occurred, where the 3 circles intersect

Front

Electromagnetic Energy

Back

Energy that is emitted from the Sun (ex: light)

Front

Circumpolar Stars

Back

Stars in the northern sky that appear to go around Polaris as Earth's rotates

Front

Waxing Moon

Back

The lit up portion is getting bigger, the light is on the right hand side