Write down 4 disadvantages of using a reflecting telescope Keywords: Geocentric, heliocentric, telescope, refraction, reflection,convex,image Keywords: focal point, waves, frequency, wavelength, amplitude, equation P1 Topic 1: Visible light and the solar system This topic looks at: Models of the Universe Use of reflecting and refracting telescopes Describe what waves are and to calculate wave speed using distance, time wavelength and frequency Waves Write a definition for the following words: Frequency: Wavelength: Amplitude: Use the equations to calculate the following: Wave speed(m/s) = distance (m) wave speed = frequency(Hz)x wavelength(m) time(s) 1.Calculate the speed of light waves that travel 900,000,000m in 3 seconds. 2.What is the speed of sound waves which have a wavelength of 2m and a frequency of 170Hz? 3.Calculate the wavelength of a wave that travel at 500m/s and have a frequency of 100Hz. 4.If a wave carries a surfer 52 metres in 8 seconds what is the wave speed? 5.If some waves of 13m wavelength have a frequency of 0.5Hz what is the wave speed? What is the difference between a refracting telescope and a reflecting telescope? Use the following words – lenses (objective and eyepiece), mirrors, curved primary mirror. Describe the models of the Solar System, including the names of the main scientists involved, and include a diagram for each: 1.Geocentric: 2.heliocentric: Write the names of the planets in our Solar System in the correct order. Key worddefinition Telescope A telescope consisting of a series of lenses Geocentric The distance from a convex lens to the point where the image of a very distant object is produced Heliocentric Italian scientist who invented the refracting telescope Galileo Sun centred model Ptolemy A device for producing a magnified image of distant objects Copernicus The point where converging light rays meet Refraction Earth centred model Focal point A lens which is thicker in the middle than it is at the edges Converging lens The change of speed and direction of a wave when it enters a new material Focal length Came up with the geocentric model Refracting telescopeCame up with the heliocentric model, but did not have the evidence to prove it Match up the following key words:

KeyWords: Alpha, beta, gamma, ionising, DNA, skin cancer, mutation Keywords: ionising, radioactive, ions P1 Topic 2: The Electromagnetic Spectrum This topic looks at: The waves in the electromagnetic spectrum with a description The uses and danger of electromagnetic waves Add the different waves onto the electromagnetic spectrum with their uses: What is the speed of light in a vacuum? State Dangers of each of the electromagnetic waves below: How do we know electromagnetic waves can travel through a vacuum such as space? Using the wave equation calculate the following v=f λ (hint use the speed of light) 1.What is the frequency of a wavelength 40m 2.What is the frequency of a wavelength 35cm 3.What is the wavelength of a wave with a frequency of 450 Hz 4.What is the wavelength of a wave with a frequency of 320Hz Ionising Radiation What is ionising radiation and what are the three type of ionising radiation? Ionising Radiation = There are 2 types of waves describe each of them below: Longitudinal Transverse Which are the waves found in the electromagnetic Spectrum

Keywords: cosmic microwave background radiation, red shift, space probes, rovers Keywords: red giant, supernova, white dwarf, black dwarf, fusion reactions, main sequence, neutron star P1 Topic 3: Waves and the Universe This topic looks at: The formation of our universe The search for Aliens Lifecycle of stars Describe the lifecycle of a star like our sun and a star bigger than our sun using pictures What are the different ways we can explore space? (Include information about SETI) What type of waves can we use to explore space? Which type of waves are absorbed by the atmosphere? Compare and contrast theories about the beginning of our universe including steady state theory and big bang theory Define key terms Universe Nebulae Galaxy Star Solar System Steady State Big Bang Theory Both How do we know space is expanding?

Keywords: Current, Energy, Power, Efficiency, Potential difference, Induction, Keywords: Transformer, Generator, Dynamo, Direct current, Alternating current, Step up, Step down. P1 Topic 5/6: Generation and Transmission of Electricity and Energy and the Future This topic looks at: How electricity is produced How we calculate current, voltage and power Conservation and the efficiency of energy use. Give an advantage and disadvantage of each of these electricity generation methods Fossil fuels Nuclear power Wind and wave power Solar Hydroelectric Identify the energy transfers at each stage A step down transformer converts the 240V mains supply to 12V to power a laptop computer. If there is 90 turns on the secondary coil, show that there needs to be 1800 turns on the primary coil. Give an example of where you would use a Step up transformer. Give an example of where you would use a Step down transformer. What is the efficiency of this bulb? Efficiency =