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All Saints’ Catholic High School & Specialist Language College Learning Programme 1 (LP1) Subject: P7.1 Year group: 11 During this half term I will be learning … LP2/1 Recall and explain the apparent motions of Sun and Moon in terms of the rotation of the Earth and the orbits of the Earth and Moon explain the phases of the Moon in terms of the relative positions of the Sun, Moon, and Earth explain why different stars are seen in the night sky at different times of the year, in terms of the movement of the Earth round the Sun H: explain why a sidereal day, a rotation of 360° of the Earth, is different from a solar day due to the orbital movement of the Earth and that a sidereal day is 4 minutes less than a solar day LP2/2 explain that the positions of astronomical objects are measured in terms of two angles as seen from Earth H: explain how the angles relate to the celestial sphere recall that the planets Mercury, Venus, Mars, Jupiter, and Saturn can be seen with the naked eye H: describe how the planets appear to move with the stars but also to change their position relative to the fixed stars recall that, (H: and explain why), planets sometimes appear to move with retrograde motion relative to the ‘fixed’ stars LP2/3 • explain both solar and lunar eclipses in terms of the positions of the Sun and Moon LP2 Homework Research Based HW All Saints’ Catholic High School & Specialist Language College Learning Programme 1 (LP1) • H: explain the low frequency of eclipses in terms of the relative tilt of the orbits of the Moon about the Earth and the Earth about the Sun • use the idea of angular size to measure how big an object appears to an observer • recall that stars and other astronomical objects emit radiation across a wide range of wavelengths • recall that some parts of the electromagnetic spectrum are absorbed by the atmosphere much more than others • recall that optical and infrared astronomical observatories on Earth are mostly situated in Chile, Hawaii, Australia, and the Canary Islands LP2.4 • recall that stars and other astronomical objects emit radiation across a wide range of wavelengths • recall that some parts of the electromagnetic spectrum are absorbed by the atmosphere much more than others • recall that optical and infrared astronomical observatories on Earth are mostly situated in Chile, Hawaii, Australia, and the Canary Islands • explain how an image can be formed on a screen using a pinhole camera • explain why the image formed with a converging lens is brighter LP2.5 • measure the focal length of a converging lens • calculate the power of a lens from: power (D) = 1/focal length (m) • understand that a more powerful lens of the same material has a more curved surface • explain refraction in terms of the change in speed of a wave • explain how refraction leads to the formation of an image by a converging lens • draw and interpret ray diagrams for a converging lens forming an image of a distant object and for an extended distant object LP2/6 • explain that astronomical objects are so distant that light from them reaches the Earth as effectively parallel sets of rays • explain that a simple telescope has two converging lenses of different powers, with the more powerful lens as the eyepiece • explain the function of the objective lens and the eyepiece • explain why most astronomical telescopes have concave mirrors, not converging lenses, as their objectives • describe how concave mirrors bring a parallel beam of Exam style questions All Saints’ Catholic High School & Specialist Language College Learning Programme 1 (LP1) light to a focus LP2/7 • explain how parallax makes closer stars seem to move relative to more distant ones over the course of a year so; a smaller parallax angle means that the star is further away • calculate distances in parsecs for simple parallax angles expressed as fractions of a second of arc • recall that a parsec is similar in magnitude to a lightyear and is the unit used by astronomers to measure distance and that typical interstellar distances are a few parsecs • recall that the luminosity of a star depends on its temperature and its size • explain why the observed intensity of light from a star depends on both the star’s luminosity and its distance from Earth. All Saints’ Catholic High School & Specialist Language College Learning Programme 1 (LP1) o