Nebular Hypothesis
How long ago did our solar system form?
4.6 billion years ago
What phase do all stars begin?
stellar nebula
What are the three influences the Sun has on Earth?
gravity
light (radiation)
solar wind
Which two elements are found in all stars?
hydrogen and helium
equation used to solve for wavelength
λ = v/f
What is the nebular hypothesis?
Theory about how our solar system formed.
Death of a star is called ________
supernova
object moving away the observer with longer wavelengths
A wave traveling 140 m/sec with a wavelength of
4.0 m has what frequency?
35 Hz
What is nuclear fusion?
Atoms combine to power stars.
What are the steps for a low mass star's life cycle?
stellar nebula
low mass star
red giant
planetary nebula
white dwarf
black dwarf
What seasonal event contains these characteristics
Sun is at farthest north or south point
Unequal solar energy between northern and southern hemisphere
Beginning of summer and winter
a solstice
object moving towards the observer with shorter waves
blue shift
A wave has a frequency of 50 Hz and a wavelength of 10 m. What is the speed of the wave?
500 m/s
What are the two main elements involved in nuclear fusion?
hydrogen and helium
What are the steps for a high mass star's life cycle?
stellar nebula
high mass star
super red giant
super nova
black hole or neutron star
Sun spots are ___________
and are caused by ___________
cool, dark areas of the sun and are caused the sun's magnetic field
the frequency of light and/or sound increases or decreases as it moves closer or farther away
doppler effect
A wave has a wavelength of 10 m and a speed of 340 m/s. What is the frequency of the wave?
34 Hz
What three things happen to the sun during nuclear fusion?
1. Chemical composition changes
2. The circumference of the sun increases
3. produces heavier elements
True or False:
neutron star is the end of a bigger high mass star
black hole is the end of a smaller high mass star
False
The Northern Lights are caused by_______
Solar wind
red shift has ________ frequency
blue shift has _________ frequency
low
high
The speed of sound in air is 340 m/s. What is the wavelength of sound waves produced by a guitar string vibrating at 490 Hz?
0.69m