Term
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Definition
| The flow of charge, measure in Amps. |
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Term
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Definition
| The amount of change of one Amp in a second. (C) |
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Term
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Definition
| The measure of how much electrical energy there is to push charges around a circuit. (V) |
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Term
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Definition
| The measure of how much a load restricts and reduces the flow of a current. Conducters have little resistance, insulators have a lot. Measured in Ohms (_O_) |
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Term
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Definition
| Controls the voltage and current of a circuit. |
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Term
| What did Sir Isac Newton do? |
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Definition
| He discovered gravity, and that force=mass+acceleration. |
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Term
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Definition
| In certain objects, if the voltage is doubled in an electric current, the current doubles. E.g Metals and Carbon. |
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Term
| What does V stand for in Ohms Law? |
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Definition
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Term
| What does I stand for in Ohms Law? |
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Definition
| The electrical current (in Amps.) |
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Term
| What order is Ohms Triangle? |
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Definition
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Term
| What is a Series circuit? |
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Definition
| Each load is included in one circuit. The voltage is shared between the components. |
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Term
| What is a Parallel circuit? |
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Definition
| The current is divided between each of the components, but each branch uses the full voltage of the power supply. |
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Term
| What is an EMR wave made up of? |
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Definition
| An Electric field, and a magnetic field. |
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Term
| What is the distance between 2 Trough and 2 Crest? |
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Definition
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Term
| Name the parts of a sound wave |
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Definition
| Trough, Crest, Amplitude. |
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Term
| What is the difference between a Trough and a Crest? |
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Definition
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Term
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Definition
| Devices that affect the force and effort required to do a job. |
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Term
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Definition
| A wheel in which a belt or rope is passed over. It changes the direction of the effort applied to the rope. A block and tackle uses two or more pulleys to reduce the amount of effort. |
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Term
| What is an inclined plane? |
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Definition
| Make it easier to slide or skid a load upwards rather then vertically. |
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Term
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Definition
| Gears are a system of toothed wheels that transmit rotary rotation from one point to another. |
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Term
| What is a wheel and axle? |
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Definition
| A wheel and axle combines the effects of a pulley and lever. |
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Term
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Definition
| A lever is a simple machine that uses the turning point of a force to make a task easier. |
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Term
| What are 1st Class levers? |
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Definition
| 1st class levers are force multipliers. The force is in the middle. E.g Seesaw |
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Term
| What are 2nd Class Levers? |
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Definition
| Force multipliers. The load is in the centre. E.g Wheelbarrow. |
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Term
| What are 3rd Class levers? |
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Definition
| Speed Multipliers. Effort in the centre. E.g Tweezers, arm and fishing rod. |
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Term
| Explain the process of Reflection |
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Definition
| When light hits a reflective surface, it bounces back. The ray that hits the surface is the incidence ray, and the ray that bounces back is the reflected ray. |
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Term
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Definition
| Light rays that pass through them meet (converge) at a point. The point where the rays meet is the focal point of the lens. |
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Term
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Definition
| Light rays reflect away (converge) from each other. They have a virtual focal point. |
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Term
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Definition
| When light slows or speeds as it travels through an object. (Transparent, Translucent) |
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Term
| Explain a Normal Light Beam |
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Definition
| A beam or ray un-affected by another substance. |
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Term
| Explain a boundry beam of light |
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Definition
| An object that interrupts the path of light. |
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Term
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Definition
| When light bounces back off an object as the same angle that it hit it. |
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Term
| Explain the process of the eye. |
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Definition
| The cornea refracts light before it hits the lens. Before it hits the lens it goes though a hole in your iris called the pupil. The iris controls how much light goes through the pupil and into your eye. The lens bends the light so the image remains clear. The light goes through the retina to the optic nerve so the brain can compress it. |
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Term
| What is the method in Electroplating? |
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Definition
1. Place the Copper in a beaker.
2. Half fill the beaker with copper sulphate.
3. Connect the iron nail to the positive terminal of a power pack and the copper electrode to the negative terminal.
4. Place a nail in the solution, making sure the two electrodes don't touch.
5. Use 10 volts from the power pack and allow the current to flow for five minutes.
6. The nail should become coated in copper. |
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Term
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Definition
| Mythopia is short sightedness. People can see close images, but there long sightedness is poor. |
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Term
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Definition
| Long sightedness. Close up images are blurry. |
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Term
| What happens when white light hits a triangular prism? |
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Definition
| Different colours emerge because each colour of light travels at a slightly different speed, and thus, is refracted at a slightly different angle. It is called dispersion. |
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Term
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Definition
| Work (Joules)=Force (Newtons) x Distance |
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