Download to read offline
More Related Content
Similar to Learning about the moon(lunar eclipse)
Learning about the moon(lunar eclipse)
- 1.
- 3. MOON • Moons arenatural satellites of every planet. • Earth has one moon and its traditional name is Luna. • Jupiter has 61 moons, Venus and Mercury do not have any.
- 4. MOON • It isthe nearest neighbor and is about one-fourth the diameter of Earth. • It has craters and flat areas. • Its pull of gravity is one-sixth as that of Earth.
- 5. A lunar eclipsehappens only when the sun, Earth, and the moon are aligned exactly or very closely with Earth in the middle.
- 6. Types of LunarEclipses
- 7. TOTAL LUNAR ECLIPSE •It happens when Earth’s umbra obscures the moon’s entire visible surface. • The total phase may be up to one hour and 40 mins long, and the entire eclipse may last up to three hours.
- 8. PARTIAL LUNAR ECLIPSE •It can be observed when Earth moves between the sun and the moon but the three celestial bodies do not form a perfectly straight line.
- 9. PENUMBRAL LUNAR ECLIPSE •In a penumbral lunar eclipse, none of the moon is completely shaded by Earth’s umbra. • Instead, only the slightest dim near the lunar limb closest to the umbra can be seen. • Indeed, only when at least half of the moon enters the penumbra, you can then see the penumbral lunar eclipse.
- 10. 8 PHASES OFTHE MOON
- 11. NEW MOON • Thenew moon is the first of the moon phases. • The moon and the sun are lined up on the same side of Earth, so you can only see the shadowed side. • Also the time to experience solar eclipse
- 12. NEW MOON • Duringthis phase, you can also see the reflected light from Earth, because no sunlight is falling on the moon. This is known as earthshine.
- 13. WAXING CRESCENT MOON •The waxing crescent moon appears when the moon is less than half-illuminated. • It is the first slice of the moon that you can see. • The word waxing means growing and refers to the size of the illuminated part of the moon that is increasing.
- 14. QUARTER MOON • Thisphase is when the moon is half illuminated. • This means that the sun and the moon make a 90˚ angle with Earth.
- 15. WAXING GIBBOUS • Awaxing gibbous occurs when the moon is illuminated by more than half, but its not yet a full moon. • The moon appears to be more than one-half but is not fully illuminated by direct sunlight.
- 16. FULL MOON • Afull moon is the brightest phase of the moon. • From Earth, the moon is fully illuminated by direct sunlight. • This is also the time of the lunar month when you can see lunar eclipses.
- 17. WANING GIBBOUS • Awaning gibbous occurs when the phase of the moon is less than fully illuminated, but the the illumination is more than half. • The moon appears to be more than half but not fully illuminated by direct sunlight. • The word “waning” means “shrinking.”
- 18. LAST QUARTER • Inthe last quarter, the moon has reached half illumination. • The left-hand side of the moon is illuminated, and the right-hand side is in darkness. • Half of the moon appears to be illuminated by direct sunlight.
- 19. WANING CRESCENT • Thewaning crescent is the final slice of illuminated moon that you can see before the moon goes into darkness again. • The moon appears to be partly, but less than one-half is illuminated by direct sunlight.
- 20. • Following thewaning crescent is the new moon, beginning a repetition of the complete phase cycle that lasts about 29.5 days. • The time in days counted from the time of the new moon is called the moon’s age. • Each complete cycle of phases is called a lunation.
- 21. What causes tidesto rise and fall?
- 22. ALL About Tides •Tides are caused by the gravitational pull of the sun and the moon. • The type of gravitational force that causes tides is known as tractive force.
- 23. ALL About Tides •Spring tides occur when the gravitational effects of the sun and the moon combine. • Spring tides occur during the full moon and the new moon.
- 24. ALL About Tides •Neap tides occur twice a month when the Sun and the Moon are at right angles to Earth. • Neap tides occur during the quarter moon phases.
- 25. SIGNIFICANCE • Most peopleobserve that they are able to catch more fish during high tides. • Tides can clear the shores of litter and other debris. • People should also know the schedule of the high tide and the low tide. Ships usually have to wait for the high tide to come before they are able to dock or leave the port. • In places where the difference of water levels between tides is high, people have learned to harness the tide’s energy.