Question

2 matching 5 points match each item with the correct phrase below. red shift nutation precession electromagnetic spectrum blue shift all forms of energy that exhibit wave-like behavior as they travel through space spectrum of light seen as stars are moving away from the observer spectrum of light seen as stars are moving toward from the observer the cycle during which earth jiggles and changes the angle of its axis slightly because of the pull of the moon. the cycle during which earth wobbles on its axis changing the way the axis points and which star is \the north star\ previous next

Explanation:

• red shift: When stars move away from an observer, the light's wavelength stretches, resulting in a red shift. So it matches "spectrum of light seen as stars are moving away from the observer".
• nutation: Nutation is a small, irregular wobble or jiggling of Earth's axis, often due to the Moon's pull, matching "the cycle during which Earth jiggles and changes the angle of its axis slightly because of the pull of the moon".
• precession: Precession is the slow wobble of Earth's axis over long periods, changing which star is the North Star, so it matches "the cycle during which Earth wobbles on its axis changing the way the axis points and which star is 'The North Star'".
• electromagnetic spectrum: This encompasses all forms of energy (like light, radio waves, etc.) that have wave - like behavior in space, matching "all forms of energy that exhibit wave - like behavior as they travel through space".
• blue shift: When stars move toward an observer, the light's wavelength shortens, leading to a blue shift, matching "spectrum of light seen as stars are moving toward from the observer".

Answer:

• red shift: spectrum of light seen as stars are moving away from the observer
• nutation: the cycle during which Earth jiggles and changes the angle of its axis slightly because of the pull of the moon
• precession: the cycle during which Earth wobbles on its axis changing the way the axis points and which star is "The North Star"
• electromagnetic spectrum: all forms of energy that exhibit wave - like behavior as they travel through space
• blue shift: spectrum of light seen as stars are moving toward from the observer