Access 2 Physics

A new course for 2007!

Access 2 Physics• Energy• Electricity• Light, Colour and Sound• Forces• Magnetism• Earth and Space

Access 2 PhysicsHow will we work?

�Talking�Writing�Planning�Recording - sound�Recording - video�Presenting -

posters, leaflets, powerpoints, talks, mp3s, videos.

Looking at books Looking at posters Watching videos Using the internet Doing surveys Explaining Drawing

conclusions

EnergySources and use of energy Measure solar energy in different places Investigate solar panels (number and angle)

Do a survey to find which sources of energy we use to heat our homes. Find out about renewable and non- renewable sources of energy.

Sources and use of energy Measure solar energy in different places Investigate solar panels(size of panel, brightness of bulb and angle from bulb)

Measure solar energy in different places

PlaceReading on Voltmeter

(volts)

sitting at desk

near window

under desk

near light

stair window

Investigating Solar PanelsHow does the size of the panel affect the voltage?

Put the following statements in order -

Collect a solar cell, multimeter and two wires.Measure the voltage on the meter

Do it again with different sizes of solar panelConnect the meter to the solar cell

Investigating Solar PanelsHow does the size of the panel affect the voltage?

Results

Size of solar panel

Reading on Voltmeter

(volts)

Whole panel

Half panel

Quarter panel

Was there a pattern? ......................................................................

How could we improve next time? .................................................

Investigating Solar PanelsHow does the angle of the panel affect the

voltage?

Put the following statements in order -

Collect a solar cell, multimeter and two wires.Measure the voltage on the meter

Do it again with solar panel at different anglesConnect the meter to the solar cell

Investigating Solar PanelsHow does the angle of the panel affect the

voltage?

Results

Angle of solar panel

Reading on Voltmeter

(volts)

flat

steep

standing up

Was there a pattern? ......................................................................

How could we improve next time? .................................................

Investigating Solar PanelsHow does the brightness of the bulb affect the

voltage?

Put the following statements in order -

Collect a solar cell, multimeter and two wires, a power supply two wires and a bulb.

Switch on and measure the voltage on the meterDo it again with the bulb at different brightnessConnect the meter to the solar cell and the bulb

to the power supply.

Investigating Solar PanelsHow does the brightness of the bulb affect the voltage?

Results

Brightness of bulb

Reading on Voltmeter

(volts)

Dull

Medium

Bright

Very BrightWas there a pattern? ......................................................................

How could we improve next time? .................................................

Sources and use of energy Do a survey to find which sources of energy we use to heat our homes. Find out about renewable and non- renewable sources of energy.

Sources and use of energyWhich appliance costs the most to

use?

kettle

fan

hair drier (hot)

hair drier (cold)

laptop

heater

radio

lamp

Sources and use of energy

ApplianceGuessed Order

(most expensive first)

Cost Real Order

kettle

fan

hair drier (hot)

hair drier (cold)

laptop

heater

radio

lamp

Ways to save money at homeWhat to do ... Why this helps save money.

Only fill the kettle with as much water as you need

Leave hot water in your sink or bath until it cools down.

Do not leave your TV or computer on standby overnight.

Have a shower instead of a bath.

Put lids on saucepans when cooking.

Hang your washing outside to dry instead of using a tumble dryer.

Change light bulbs to energy saving bulbs

Wash clothes at 30oC not 40oC

Ways to save money at homeWhat to do ... Why this helps save money.

Only fill the kettle with as much water as you needIt takes more energy to heat more water.

This costs more.

Leave hot water in your sink or bath until it cools down.

The heat energy in the water helps heat the house. Pouring it down the drain

wastes heat energy.

Do not leave your TV or computer on standby overnight.

Even the little red light on your TV or computer needs energy. This costs money

Have a shower instead of a bath.A bath uses 5 times more hot water than a

shower. Water costs a lot to heat up.

Put lids on saucepans when cooking.If you don’t have a lid, some heat escapes and so more is needed. This costs money.

Hang your washing outside to dry instead of using a tumble dryer.

The sun and the wind are free. A tumble dryer costs money to use.

Change light bulbs to energy saving bulbsEnergy saving bulbs cost less to run and

last longer.

Wash clothes at 30oC not 40oCThe hotter the water, the more it costs to

heat up.

Ways to save money at homeMaking a Survey

•What questions will we ask?•Who will we give the survey to?•How long will we give them to complete it?•What will we do with our results?

EnergyEnergy changers Operate appliances and spot energy changes Build a roller or projectile launcher and investigate. Investigate wind up toys

Find the energy content of different types of food.

EnergyHeat energy Investigate heating solids, liquids and gases Test conductivity of metals Test materials for best insulator

Find out about heat loss from houses and ways to insulate themFind out about times needed to cook foods

Passing HEAT through metals

Material Time (seconds)

Steel 190

Brass 67

Aluminium 42

Copper 33