7.2

Tell the person next to you…

·         The names of 3 subatomic particles

·         What properties do they have?

atomic structure - electrons orbiting the nucleus.swf Download this file

sub-atomic particles - drag and drop.swf Download this file

·         7.2 describe the structure of an atom in terms of protons, neutrons and electrons and use symbols such as ¹⁴₆C to describe particular nuclei

Proton number and mass number.ppt Download this file

atomic structure of Li - mass and proton numbers.swf Download this file

P7 student objectives sheet

P7 IGCSE Physics Student Objectives.doc Download this file

P7 student objectives sheet

P7 IGCSE Physics Student Objectives.doc Download this file

6.18

6.18 explain the use of step-up and step-down transformers in the large-scale generation and transmission of electrical energy

·   

National grid worksheet.doc Download this file

6.20

6.20 recall and use the relationship (for 100% efficiency):

        input power = output power

                     V_p I_p = V_s I_s

 

6.19 and 6.20 Plenary

transformer worksheet.doc Download this file

transformer animation with sliders and example calculations.swf Download this file

6.19

6.19 recall and use the relationship between input (primary) and output (secondary) voltages and the turns ratio for a transformer:

input (primary) voltage        = primary turns

output (secondary) voltage     secondary turns

                                          V_p/V_s = n_p/n_s

transformer quick quiz.swf Download this file

6.17

6.17.docx Download this file