Star Patterns
What name do we give a recognizable group of stars that forms a pattern?
Constellations
What do we call the whole cycle from New Moon to New Moon?
Lunar (Moon) Cycle
What direction does the Sun seem to come up from each morning?
East (the Sun appears to rise in the east).
Is the Sun a star or a planet?
The Sun is a star.
How long does it take Earth to spin once on its axis?
About 24 hours or 1 day
True or false: The shapes of star patterns change every night.
False — the patterns stay the same even though they appear to shift across the sky.
How long does it take for the moon to complete one lunar cycle.
About one month (29.5 days)
Why does the Sun look like it moves across the sky during the day?
Because Earth rotates on its axis, making the Sun appear to move.
Why do stars look like tiny points of light even though some are huge?
Because stars are extremely far away, so even very large stars appear as tiny points of light from Earth.
How long does it take Earth to go once around the Sun?
About 12 months (365 days), or one year
Why do some constellations appear only during certain seasons?
Because Earth’s revolution around the Sun
Why do we see different portions of the lit part of the moon throughout the month?
The moon is revolving or orbiting around the Earth.
If Earth spun more slowly, how would a single day change?
Days would be longer — one rotation would take more time, so daylight and nighttime would each last longer.
Name two types of energy the Sun gives Earth.
Light (visible) energy and heat (thermal) energy
Which motion of Earth causes different constellations to be visible in different seasons — rotation or revolution? Explain.
Revolution — Earth’s revolution around the Sun changes which stars are on the night side during different times of year.
If a constellation is in the eastern sky at 8 p.m., where will it likely be two hours later?
It will have moved (shifted) across the sky toward the west.
A student notices the Moon looks the same on the same date next month. Explain why this pattern repeats.
The Moon completes its cycle of phases in about 29–30 days, so the same phase appears again about one month later.
Give one reason why sunrise and sunset times change slightly each day.
Because Earth moves along its orbit around the Sun and because of Earth’s tilted axis, the times of sunrise and sunset shift a little each day.
Explain why the Sun looks brighter to us than other stars.
The Sun is much closer to Earth than other stars, so its light appears much brighter.
What is the imaginary line that Earth spins on called?
Axis
Explain why all the stars look like tiny points of light even though some are much larger than our Sun.
Stars look like points because they are very far away from Earth, so even large stars appear small.
What are all the phases of the moon?
New moon, waxing crescent, 1st quarter, waxing gibbous, full moon, wanning gibbous, 3rd quarter, wanning crescent, back to new moon
Explain how Earth’s rotation makes daytime for one side of Earth and nighttime for the other.
As Earth rotates on its axis, one side of Earth faces the Sun and receives sunlight (day) while the opposite side faces away from the Sun and is in shadow (night).
A student says "The Sun is the biggest star in the galaxy." Explain why this statement might be incorrect.
The Sun is only an average-sized star; many stars in the galaxy are much larger. The Sun appears large to us mainly because it is very close to Earth.
Compare rotation and revolution: give one fact about each.
Rotation: Earth spins on its axis once every ~24 hours causing day and night. Revolution: Earth travels around the Sun once every ~365 days causing the year and seasonal changes.