Rotating & Revolving It’s Just a Phase $100.00 $200.00 $300.00 $400.00 Models Have Limits! Season Reasons Earth’s Cycles $100.00 $200.00 $300.00 $400.00 $500.00 Scoreboard

An object spinning on its axis rotation revolution eclipse tilt 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Back to you Alex

The amount of time it takes the Earth to complete one revolution 24 hours 27.3 days 365 ¼ days 1 month Back to you Alex

This causes us to have day and night Earth’s rotation Earth’s revolution Tilt of Earth’s axis Eclipses Back to you Alex

The amount of time it takes for the moon to revolve around the Earth A day A month A year 12 hours Back to you Alex

The reason that we have seasons on Earth Earth rotates on its axis Earth moves closer to the sun as it revolves Earth’s axis is tilted as it rotates around the sun Earth’s axis is tilted as it revolves around the sun Back to you Alex

The phase shown here New moon Quarter moon Full moon Waxing gibbous Back to you Alex

The direction the sun is shining from in the phase shown here Left Right Top Bottom Back to you Alex

The phase of the moon we see depends on this Where you are on Earth How much of the moon’s surface is lit by the sun How much of the sunlit side of the moon faces Earth Whether or not an eclipse is occuring Back to you Alex

The amount of the lit side of the moon you see is the same during these 2 phases New moon & full moon Waxing crescent & waxing gibbous First quarter & third quarter Waxing crescent & waning gibbous Daily Double Back to you Alex

The phase that occurs when the moon is directly between the Earth and sun Full moon First quarter Lunar eclipse New moon Back to you Alex

Definition of a model An exact copy of a scientific process An approximate copy of a scientific process A toy A picture Back to you Alex

Things that aren’t entirely correct in a model are called this Perfect Flaws Helpful Limitations Back to you Alex

The reason we use models in science They have limitations They are exact They show us how things work that we can’t normally observe They show us how things work that we can normally observe Back to you Alex

This is not a limitation of the “Moon Pop” Lab The “Moon” did not rotate Sizes and distances were inaccurate The “Earth” moved the “Moon” The moon phases you saw were not accurate Back to you Alex

The greatest limitation of the seasons model seen here: All 4 seasons are shown at once Size and distances are inaccurate The tilt of Earth’s axis is not shown The direction of the orbit is not shown Back to you Alex

The hemisphere receiving the most direct rays in this diagram SUN Northern Southern Eastern Western Back to you Alex

When a hemisphere is receiving the most direct rays, it is also experiencing this Most hours of sunlight Least hours of sunlight Equal hours of sunlight No sunlight 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Back to you Alex

This is our shortest day of the year Summer Solstice Autumnal Equinox Winter Solstice Vernal Equinox Back to you Alex

During an equinox, this hemisphere is tilted more toward the sun Northern Southern Eastern None 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Back to you Alex

The number of hours of daylight that occur on an equinox 24 12 8 6 Daily Double Back to you Alex

The moon phase that occurs between these two phases: Picture Choice 1 Picture Choice 2 Picture Choice 3 Picture Choice 4 1. 2. 3. 4. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Back to you Alex

If November 21st was a first quarter moon, the approximate date of the next first quarter moon November 28th December 1th December 20th January 1st 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Back to you Alex

The day that occurs in the Northern Hemisphere at Position A Winter equinox--shortest day of the year Winter solstice—shortest day of the year Summer equinox—longest day of the year Summer solstice—longest day of the year B A C D 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Back to you Alex

The season that occurs between positions B and C Summer Fall Winter Spring B A C D 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Back to you Alex

This occurs between positions D and A rays get less direct and hours of daylight get shorter rays are indirect and hours of daylight are short rays and neither direct or indirect and hours of day & night are equal rays get more direct and hours of daylight get longer B A C D 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Back to you Alex