1 Identifying Patterns of Change The student is expected to identify patterns of change such as in weather, metamorphosis, and objects in the sky.

2 Vocabulary Change- To make or become different. Cycle- A course or series of events that recur regularly and usually lead back to the starting point. Metamorphosis- A change of physical or structure (transformation). Revolve- To travel in a closed path around an object such as Earth does as it moves around the Sun. Rotate- The spinning of an object on its axis. Phases of the moon- The illuminated changes of the moon as viewed from Earth due to its motion around the Earth.

3 Vocabulary Axis- An imaginary line that passes through Earth’s center and its North and South poles. Season- A period of the year characterized by or associated with a particular type of weather phenomenon due to the tilt of the Earth’s axis. Weather- The state of the atmosphere with respect to heat or cold, wetness or dryness, calm or storm, clearness or cloudiness. Fronts- Fronts occur where two large air masses collide at the Earth’s surface. Cold front- This occurs when a cold air mass pushes under a warm air mass. Warm front- This occurs when a warm air mass slides on top of a cold air mass.

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5 Life Cycle Table SpeciesEgg Larva / Nymph PupaAdult Housefly8-12 hrs5 days4-5 days2 weeks Monarch Butterfly 4 days2 weeks10 days 2-6 weeks Ladybug4 days2 weeks 3-9 months

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9 Life Cycle of a Frog EggsTadpole Tadpole (back legs form) FrogletAdult Frog 10 days At 10 days the tadpole leaves the egg. At 8 weeks the back legs have formed. At weeks the tail begins to disappear. It takes about 3 years for the frog to reach adult hood.

10 Eggs Tadpole Tadpole with legs Froglet Adult Frog

11 Comparing Tadpoles to Frogs TadpolesFrogs Tadpoles have gills. They lose their gills and breathe with lungs. Tadpoles have tails. They lose their tails when they become frogs. Tadpoles cannot reproduce. Frogs can reproduce. Tadpoles cannot live on land. Frogs can live on land.

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14 Note: Graphic is not to scale.

15 A cold front occurs when a cold air mass pushes under a warm air mass. Weather associated with cold fronts involves low pressure systems that are usually severe and may include thunderstorms, hail, and a drop in temperature.

16 A warm front occurs when a warm air mass slides on top of a cold air mass. Weather associated with warm fronts is usually less severe and may include steady, light precipitation with warmer, dryer air.

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18 What causes the tides? Bulge

19 Phases of the Moon NEW MOON The illuminated side of the moon is not facing the Earth, therefore the moon is not visible from Earth.

20 Phases of the Moon WAXING CRESCENT From Earth, the moon appears to be partly illuminated. In this phase less than half of the moon appears illuminated. The illuminated portion is increasing in size from our point of view on the Earth.

21 Phases of the Moon FIRST QUARTER From Earth, half of the moon appears to be illuminated. The moon has completed one-fourth of its revolution around the Earth. The illuminated portion within our view is increasing in size.

22 Phases of the Moon WAXING GIBBOUS From Earth, more than half of the moons surface appears to be illuminated. The illuminated portion within our view is increasing in size.

23 Phases of the Moon FULL MOON The moon’s illuminated side is facing the Earth. From Earth, the moon appears to be completely illuminated.

24 Phases of the Moon WANING GIBBOUS From Earth, the moon appears to be more than half illuminated. The illuminated portion within our view is decreasing in size.

25 Phases of the Moon LAST QUARTER From Earth, half of the moon appears to be illuminated. The illuminated portion within our view is decreasing in size.

26 Phases of the Moon WANING CRESCENT From Earth, the moon appears to be partly illuminated. In this phase less than half of the moon is illuminated. The illuminated portion within our view is decreasing in size.

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28 Phases of the Moon Animation

29 As viewed from Earth. Viewing the Earth’s Northern Hemisphere from Space

30 What are eclipses? eclipse An eclipse occurs when an astronomical body such as a planet or moon is between the Sun and another body (planet or moon). From Earth, we experience two types of eclipses: lunar eclipses and solar eclipses.

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