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45 Cards in this Set
- Front
- Back
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Angle of incidence is equal to angle of Reflection |
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Light reflects on smooth surfaces = clear reflection. Light reflects on a rough surface = blurry and unclear reflection |
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Light reflects on objects which bounce into our eyes |
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Normal line in between the angle of incidence and reflection. |
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Required for graphs: MIRROR LINE INCIDENCE REFLECTION NORMAL ANGLES MARKED ARROWS |
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Light reflected by Rays. Luminous - Glows in the dark. Emits own light. Emit - Gives a light. Non- Luminious opposite wont glow doesnt emit light Reflect - mirros the light. Object that bounces off a light.
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Lights bends when it passes through another medium. Some light will be reflected - Reflection Some light will be transmitted: Transmission Some light will be absorbed : Absorption |
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White lights is made up from multiple colors but is viewed as a white color. Rainbows are formed when sunlight hits water coming from the rain. The light slows down and it bends forming different colors. |
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Red travels fastest, violet travels the slowest. Red, Green, Blue |
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Colors become sharper when they are put in front of the same colored filter. Colors become duller/ absorbed when they are put in front of a different color filter. Colors stay the same when they are put in front of white filters. |
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Secondary Colors of Light are cyan, magenta and yellow |
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Red + Blue = Magenta Red + Green = Yellow Blue + Green = Cyan |
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Light travels much faster than sound. |
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Frequency of a wave = the number of waves that pass a certain point each second. |
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Units of frequency are hertz (Hz). It is common for kilohertz, megahertz and gigahertz. |
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Larger Wavelength = Lower Frequency Smaller Wavelength = Higher Frequency |
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Low Pitch - Large Wavelength - Lower Frequency High Pitch - Small Wavelength - Higher Frequency
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Amplitude = Volume Frequency = Pitch |
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3 Bones that carry the vibrations from the ear drum to the cochlea =
Hammer Anvil Stirrup |
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Auditory Nerve carries impulses from the cochlea to the brain. |
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Pinna - Outer Ear |
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Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune |
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Hemisphere facing towards the sun is summer. vice versa |
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The 4 planets closest to the Sun are rocky planets the others are made of gas. |
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More gravitational pull from the Sun on the nearer planets. |
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There is gravitational attraction between all objects. This is called gravity. |
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Greater Mass = Greater Attractive Forces Closer Objects = Greater Attractive Forces |
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Mass is a measure of how much stuff is in an object. Weight is a force acting on that stuff. (N) |
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Weight = mass times gravitational force. |
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Current model of the solar system - Heliocentric System |
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Acid rain is formed when gases in the air pollute the air which end up polluting rain droplets resulting in Acid Rain. The droplets become polluted when the air oxides with Sulphur dioxide and nitrogen oxides. |
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Granite - No effect Sandstone - Dissolved Iron Filings - Oxides Copper Filings - No Effects |
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Controlling Pests by Herbicides, Pesticides and Biological Control. Pesticides can be bad due to bio-accumulation. |
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DDT is a pesticide for insects and can kill them. Useful for farmers to grow crops and stop the spread of disease. Killed eagles |
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Metals - Conduct electricity heat Heat up quickly High melting point except mercury Strong Flexible Some are found underground Some are reactive |
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Test for Hydrogen - Put lit splint and see if squeaky pop is present. |
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Test for Co2- LimeWater Test |
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Rusting requires oxygen and water, |
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Metal + Water = Hydrogen + Metal Hydroxide |
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Metal Carbonate + Acid = Salt + Carbon Dioxide + Water |
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Metal + Acid = Salt + Hydrogen |
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Metal Oxide + Acid = Salt + Water |
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Hydrochloric acid = Chlorides Sulphuric Acid = Sulphates Nitric Acid = Nitrates |
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Copper is lower than hydrogen in reactivity so it cannot react. |
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Iron + Water + Oxygen = Hydrated Iron Oxide |
Finish |
