Activity 84 Activity 84 Assessment Assessment

Brookville Intermediate Brookville Intermediate SchoolSchool

88thth grade grade

DayDay

What changes happen in the sky What changes happen in the sky every 24 hours?every 24 hours?– It gets light and darkIt gets light and dark– We have day and nightWe have day and night– The sun rises and setsThe sun rises and sets– The sun looks like it moves from the The sun looks like it moves from the

east to the westeast to the west

DayDay

What causes theses changes?What causes theses changes?– The Earth spinning on its axisThe Earth spinning on its axis– The rotation of Earth around its axisThe rotation of Earth around its axis

YearYear

What is a year?What is a year?– 365.25 days365.25 days– 12 months12 months– One complete orbit around the SunOne complete orbit around the Sun– One revolution around the SunOne revolution around the Sun

YearYear

What changes happen in the What changes happen in the Sun’s Sun’s positionposition in the sky in the sky over a yearover a year??– The sun is higher in the sky during the The sun is higher in the sky during the

summer months and is lower in the sky summer months and is lower in the sky during the winter monthsduring the winter months

YearYear

What causes these changes?What causes these changes?– The orbit of Earth around the Sun along The orbit of Earth around the Sun along

with the Earth’s tiltwith the Earth’s tilt– Earth’s tilt combined with its revolution Earth’s tilt combined with its revolution

around the Sunaround the Sun

SeasonsSeasons

What changes happen in the season What changes happen in the season every year?every year?– The days get longer and shorterThe days get longer and shorter– The temperature changes: summer The temperature changes: summer

hotter and winter colderhotter and winter colder

SeasonsSeasons

What causes these changes?What causes these changes?– The tilt of Earth combined with it’s orbit The tilt of Earth combined with it’s orbit

around the Sunaround the Sun– Earth revolving around the Sun as it is Earth revolving around the Sun as it is

tilted on it’s axistilted on it’s axis

Moon PhasesMoon Phases

What changes take place in the What changes take place in the visible shape of the Moon from day visible shape of the Moon from day to day?to day?– Waxing and waning of the moonWaxing and waning of the moon– The moon moves through a cycle- full The moon moves through a cycle- full

moon to new moon and continues the moon to new moon and continues the cycle over and overcycle over and over

– The phases include full moon, crescent The phases include full moon, crescent moon, gibbous moon and full moonmoon, gibbous moon and full moon

Moon PhasesMoon Phases

How long does it take for these How long does it take for these changes to take place?changes to take place?– About a monthAbout a month– 29-30 days29-30 days

Moon PhasesMoon Phases

What causes these changes?What causes these changes?– Half of the moon is always lit upHalf of the moon is always lit up but but

at different points in its orbit around the at different points in its orbit around the Earth we can only see part of the half Earth we can only see part of the half that is lit up.that is lit up.