1) 9(a) (i) What will be the perfect answer? a) Microwaves will bounce off walls b) Stops the heat escape c) Microwaves will be reflected back d) Microwaves can not travel through metal 2) 9(a) (ii) What wil be the perfect answer?l a) The glass won't melt b) Microwaves can go through glass c) Heat can go through glass d) Glass does not absorb microwaves 3) 9(b) (i) What will be the perfect answer? a) The water particles have gained Kinetic Energy so move more b) Particles have gained heat energy so move around more c) move around d) particles heat up 4) 9(b) (ii) What is the perfect answer? a) heat passed on b) Conduction or convection heats rest of food c) radiation heats the rest of the food d) all food particles heated up by microwave 5) 9(c) What is the perfect answer? a) the specific heat capacity is different b) Oil is hotter c) Cooking oil has a lower Specfic Heat Capacity d) Water has a lower Specific heat capacity 6) 10 (a) What needs to be added to make this answer worth 3 marks? Particles in air colide with those in the solid and Energy is transferred. This causes the solid glass particles to vibrate. a) Heat particles transfer the heat through the glass b) Energy passed from Cold glass particle to hot air c) Vibrating particles cause the next solid glass particle to vibrate so energy transferred d) Glass particle has free electrons to carry heat energy 7) 10 (b) (i) what is the perfect answer? a) 2 years b) £200 c) £400 d) £100 8) 10(b) (ii) What is the perfect answer? a) 250 b) 20 c) 1000 d) 50 9) 10(b) (iii) What is the perfect answer? a) heat trapped b) Air is a conductor c) Air trapped and insulates meaning little convection d) Air trapped and insulates meaning little conduction 10) 10(b) (iv) The perfect answer is? a) Reflective silver foil b) double glazing c) loft insulation d) cavity wal insulation 11) 10(c) (i) Unit of Temperature a) degrees b) Joules c) Degrees Celsius d) Kwh 12) 10(c) (ii) Unit of Energy a) Joules b) Watts c) Volts d) Amps 13) 11(a) Perfect Answer? a) Cancer b) suntan c) damage d) Skin Cancer 14) 11(b) 1 First reason? a) Filters out uv b) Naturally works that way c) Darker skin stops uv d) Skin colour stops uv 15) 11(b) 2 Second reason? a) Darker skin contains more melanin to absorb uv b) Darker skin reflects uv c) Darker skin stops uv d) Darker skin filters out uv 16) 11(c) What is missing from this answer? Suncreams allow longer exposure in the sun without damage. a) This is because it lasts a long time. b) This is because less uv can get through. c) This is because it contains melanin d) This is because it reflects th uv. 17) 12(a) What 2 things must be drawn to get the marks. a) Rulered line zig zagged along b) Lines reflected at surface and zig zagged c) Rulered lines reflected at surface and angles same size d) Ray contained in fibre and rullered 18) 12(b) (i) The missing word is? a) analogue b) burglar alarms c) calculators d) refraction e) digital f) reflection 19) 12(b) (ii) The missing word is? a) analogue b) burglar alarms c) calculators d) refraction e) digital f) reflection 20) 12(b) (iii) The missing word is? a) analogue b) burglar alarms c) calculators d) refraction e) digital f) reflection

P1 Perfect answer Jan 09

by Anonymous
Embed

Leaderboard

Visual style

Options

Switch template

Continue editing: ?