Presentation on theme: "Chapter 28 – Sun-Earth-Moon System"— Presentation transcript:
1 Chapter 28 – Sun-Earth-Moon System Space, the final frontier...-Cpt. James T. Kirk-USS Enterprise
2 28.1 Tools of AstronomyOBJECTIVESDescribe electromagnetic radiation.-Explain SpectrumExplain how telescopes work.-what types are there?-what makes them different?Describe space exploration.-Who and when?-What countries?Describe moon features-ejecta, mare, albedo…
3 28.1 Electromagnetic spectrum The arrangement of waves that includes gamma rays, X rays, ultraviolet radiation, visible light, infrared radiation, microwaves, and radio waves according to wavelength and frequency is called the electromagnetic spectrum.
4 28.1 Refracting Telescopes The telescope that uses lenses to bring visible light to a focus is a refracting telescope.
5 28.1 Reflecting Telescopes Telescopes that uses mirrors to bring visible light to a focus
6 28.1 InterferometryInterferometry is the process of linking many separate telescopes together to act as one
7 28.1 SatellitesTelescopes are placed above the atmosphere in order to most effectively collect infrared and ultraviolet radiation, X-rays, and gamma rays.Hubble Space Telescope
9 Cell phones, PCs, flat screen TV are a few examples of this. 28.1 Space spinoffCell phones, PCs, flat screen TV are a few examples of this.
10 28.2 The MoonOBJECTIVESDescribe the development of exploration of the MoonIdentify features on the Moon.Explain the theories about how Moon was created.
11 Space RaceYuri Gagarin was the first man in space.
12 Project Mercury launched the first American into space on May 5, 1960. Alan Shepard was the first American man in space.Project Mercury launched the first American into space on May 5, 1960.
13 Project GeminiProject Gemini launched a two-person spacecraft into orbit in 1965.
14 Project ApolloThe space exploration program that landed astronauts on the Moon was Apollo.Apollo Missions
15 July 20, 1969Neil Armstrong was the first man to step foot on the Moon.
16 Moon’s FeaturesThe Moon’s surface is very different from the surface of Earth because the Moon has no erosion.
17 EjectaEjecta is the material blasted out of the Moon’s surface as a result of space-object impacts.
18 MareDark, smooth plains on the Moon's surface (Maria, pl.)
19 The portion of sunlight reflected by the Moon’s surface. AlbedoThe portion of sunlight reflected by the Moon’s surface.(actually from any satellite or planet that cannot produce its own light)
20 RillesValley-like structures on the Moon's surface
21 Synchronous RotationThe Moon's state, in which its rotational and orbital periods are equal
22 Simultaneous formation theory The theory that suggests the Moon was formed at about the same time as Earth and from similar materials is called the simultaneous formation theory.
23 28.3 The Sun-Earth-Moon System OBJECTIVESIdentify the relative positions and motions of Earth, the Sun , and the Moon.Describe the phases of the moon.Explain eclipses of the Sun and Moon.
24 Earth’s RotationThe daily rising and setting of heavenly objects like the Sun is caused by the rotation of Earth.
25 Our timekeeping system is based on the solar day.
26 Foucault pendulumHanging-weight system that helps demonstrate the rotation of Earth
27 Plane of the Earth's orbit about the Sun called the ecliptic
28 Earth’s TiltDifferent seasons occur because of Earth’s tilt and Earth’s orbital motion around the Sun.Net effect:Seasons!
29 SolsticeEarth’s position near or on December 21, at which the northern hemisphere has its minimum daylight hoursEarth’s position around June 21, at which the northern hemisphere has its maximum daylight hours
30 Equinox‘Vernal’Earth’s position when the lengths of day and night are equal‘Autumnal’
31 Apogee vs. perigeePerigee - Closest point to Earth in the Moon’s orbitApogee - Farthest point from Earth in the Moon’s orbit
32 Lunar PhasesThe sequential changes in the appearance of the Moon are called lunar phases.Sun
33 WaxingWhen the Moon waxes during its lunar cycle, the amount of its sunlight portion that we see appears to increase in size.
34 When 2 full moons occur in the same calendar month.. “Blue Moon”When 2 full moons occur in the same calendar month..YearMonthFirst Full MoonBlue Moon2009December2nd at 07:2931st at 19:11YearMonthFirst Full MoonBlue Moon2012August2nd at 03:2531st at 13:56
35 Can only occur during the phase of the full moon. Lunar EclipseA lunar eclipse occurs when the Moon passes through Earth's shadow.Can only occur during the phase of the full moon.
36 Solar EclipseOccurs when the Moon passes directly between the Sun and Earth (Solar eclipses can only occur at time of New Moon)
37 Eclipses - Why not every month? The orbit of the Moon is tilted 5° relative to the ecliptic plane of the Earth-Sun. ie. Most months its shadow passes north or south of the Earth.