1. Our Solar System and Beyond
Earth Goes Around The Sun

2. http://studyjams. scholastic
Day and Night

3. Day and Night

4. Rotation – spin on axis; takes Earth 24 hours

5. Revolution – one complete cycle around the Sun; takes Earth 365 ¼ days

6. Rotation and Revolution sung to the tune of “Row Your Boat”
Ro – Ro- Rotation For 24 hours we say! The Earth Spins on its axis This will make a day! Rev- Rev- Revolution The Earth goes round the Sun Three hundred sixty-five days Until a year is done!

7. U. S. Standard Time Zones Eastern Central Mountain Pacific
Standard Time Zone – a vertical belt about 15 degrees wide in longitude in which all locations have the same time
U. S. Standard Time Zones
Eastern
Central
Mountain
Pacific

8. International Date Line

9. http://studyjams. scholastic
Seasons

10. Reasons for Seasons The Earth’s orbit around the Sun.
The tilt of the Earth’s axis at an angle of 23.5 degrees.

11. Solstice
The Sun reaches its greatest distance north or south of the equator twice each year. Each of these days, when the Sun is farthest north or south of the equator, is known as a solstice.

12. Solstice
The day when it is farthest north of the equator is the Summer Solstice. This occurs on June 21 of each year. It is the longest day of the year.

13. Solstice
When the Sun is farthest south of the equator, this is the Winter Solstice. This occurs around December 22.

15. Equinoxes
Halfway between the solstices, neither hemisphere is tilted toward or away from the Sun. The noon Sun is directly above the equator. The Spring Equinox occurs around March 21.

16. Equinoxes
The autumnal equinox occurs around September 22. It marks the beginning of fall.

17. Eclipses
Solar Eclipse – the blocking of sunlight to Earth that occurs when the Moon is directly between the Sun and the Earth
Lunar Eclipse – the blocking of sunlight to the Moon that occurs when Earth is directly between the Sun and the Moon

18. Solar Eclipse

19. Solar Eclipses
Total Solar Eclipse
Partial Solar Eclipse

20. Lunar Eclipse

21. Lunar Eclipses
Total Lunar Eclipse
Partial Lunar Eclipse

22.
The Life Cycle of a Star

23. A giant ball of gases held together by gravity.
What is a Star?
A giant ball of gases held together by gravity.

24. A Star is Born!
Born in a nebulae – vast clouds of dust and gas in space
At 10 million degrees, nuclear fusion occurs
A protostar is born

25. Main Sequence
After a star forms, it is in its main life period called the main sequence period. This can last for MILIONS of years!

26. The Death of a Star
A star swells up into a glowing red giant that may be a hundred times larger than the original star. What happens next depends on the star’s mass.

27. The Death of a Star Medium Sized Star Cools off Core collapses
Star shrinks
White dwarf
Black dwarf
Giant or Supergiant Star
Huge explosion called a supernova
Neutron star
Black hole

28. Colors of Stars Blue Yellow Red White
Color of A Star
Colors of Stars
Blue
Yellow
Red
White

29. Red Stars 3,000 degrees Coolest Also called M-type stars
Example: Betelgeuse

30. Yellow Stars
5,000 degrees
Also called G-type stars
Example: Sun

31. Blue Stars Hottest 20,000 degrees Also known as O-type stars
Example: Spica

32. White Stars 10,000 degrees Example: Sirius

33. Elliptical galaxy Spiral galaxy Barred spiral galaxy Irregular galaxy
Way Ballad
Types of Galaxies
Elliptical galaxy
Spiral galaxy
Barred spiral galaxy
Irregular galaxy

34. Spiral Galaxy

35. Elliptical Galaxy

36. Barred Spiral Galaxy
Scientists now classify our galaxy, the Milky Way, as a barred spiral galaxy.

37. https://www. youtube. com/watch
Irregular Galaxy