Fill in the blanks.
Select the missing words in the text.
{"id":"3ce514c7-1eee-46fe-ad7f-b4b6ac850566","type":"fill-in-blanks","weight":0,"dataJson":{"prompt":"\u003cp\u003eFill in the blanks.\u003c/p\u003e","options":{"sankey":[{"label":"bar chart","value":"bar chart"},{"label":"sankey","value":"sankey"},{"label":"flow","value":"flow"}]},"template":"A {{sankey}} diagram is used to show energy efficiency.","validOptions":["Sankey"],"validResponse":{"sankey":"sankey"},"fileboyImageId":"70c4fc58-02f6-47c9-9db0-3775db67b978"}}
How do we calculate percentage efficiency?
Choose 1 answer
{"id":"a45b4a7f-bedc-4aee-9e7e-4b728ae1018e","type":"multi-choice","weight":1,"dataJson":{"key":1,"prompt":"\u003cp\u003eHow do we calculate percentage efficiency?\u003c/p\u003e","options":[{"label":"(useful energy out ÷ total energy in) × 100","value":"(useful energy out ÷ total energy in) × 100","fileboyId":"c7af7102-8992-433f-9eba-8c031665b7ee"},{"label":"useful energy in ÷ total energy out","value":"useful energy in ÷ total energy out","fileboyId":"db578ed6-f97d-4b11-888d-aff6434efd2b"},{"label":"(total energy out ÷ useful energy in) x 100","value":"(total energy out ÷ useful energy in) x 100","fileboyId":"72bd909a-f57e-4613-920b-bf3cbff54651"}],"limitChoices":{},"validResponse":["(useful energy out ÷ total energy in) × 100"],"fileboyImageId":"6014a34a-fbe6-429e-b4d0-b6989a636b33"}}
Which material will have the lowest thermal conductivity?
Choose 1 answer
{"id":"24c73b95-f59a-4950-8051-d01e585a9b1a","type":"multi-choice","weight":2,"dataJson":{"prompt":"\u003cp\u003eWhich material will have the lowest thermal conductivity?\u003c/p\u003e","options":[{"label":"metal","value":"metal","fileboyId":"f18b5233-e165-4158-9be3-7db0a89104e5"},{"label":"wood","value":"wood","fileboyId":"a2418e40-08a0-4c4d-a4d8-d46ef71a5a5d"},{"label":"air","value":"air","fileboyId":"f06cbfb3-7c37-4506-97e6-a63825f2f516"},{"label":"vacuum","value":"vacuum","fileboyId":"c12c5a97-b7e0-49ee-a695-b7cc613ee2c4"}],"limitChoices":{},"validResponse":["vacuum"],"fileboyImageId":"a3a19b77-2cd8-4993-95e5-98e773251467"}}
Which of these are ways in which a motor lifting a crate could transfer energy less usefully? (select 4)
Drag the images into the correct place.
{"id":"0929597c-0cfc-4393-8774-ffc74ae90b2c","type":"image-bucket","weight":3,"dataJson":{"prompt":"\u003cp\u003eWhich of these are ways in which a motor lifting a crate could transfer energy less usefully? (select 4)\u003c/p\u003e","buckets":[{"key":"0","name":"correct answers"},{"key":"0.3486417830453217","name":"incorrect answers"}],"options":[{"label":"heating the surroundings","value":"heating the surroundings","bucket":"0","fileboyId":"90fa5057-d253-4591-bc1c-81815ba3ff49"},{"key":"0.14647741897177502","label":"heating the cable","value":"heating the cable","bucket":"0","fileboyId":"e6e79673-1f60-403e-8e9e-0b1ede1cc663"},{"key":"0.23341031531980305","label":"transferred mechanically through sound","value":"transferred mechanically through sound","bucket":"0","fileboyId":"d7e6e214-74f6-48f8-9241-bb7bee8b43e2"},{"key":"0.7469638741085574","label":"transferred electrically","value":"transferred electrically","bucket":"0.3486417830453217","fileboyId":"27317ca9-d008-4983-b553-696a8fab0078"},{"key":"0.7366327208866692","label":"transferred mechanically to the crate's GPE store","value":"transferred mechanically to the crate's GPE store","bucket":"0.3486417830453217","fileboyId":"0ac534b1-a025-4bea-978b-cc5fab363ca5"},{"key":"0.6607827953952439","label":"transferred mechanically to the crate's thermal store","value":"transferred mechanically to the crate's thermal store","bucket":"0","fileboyId":"a4c5012e-fa63-4980-823a-87d99fb7acdb"},{"key":"0.5655049051049874","label":"transferred by radiation to the chemical store of the crate","value":"transferred by radiation to the chemical store of the crate","bucket":"0.3486417830453217","fileboyId":"dea58ed1-f981-4f44-8400-5428bbba4f40"}],"fileboyImageId":"5d74d1c0-1ade-4d2b-abaf-a38b59450799"}}
If a 0.75 efficient motor produces 150 W of useful power, what was the input power?
Choose 1 answer
{"id":"ab1a79da-7c78-4bcc-ae3e-3e5cf5c70c56","type":"multi-choice","weight":4,"dataJson":{"key":4,"prompt":"\u003cp\u003eIf a 0.75 efficient motor produces 150 W of useful power, what was the input power?\u003c/p\u003e","options":[{"label":"50 W","value":"50 W","fileboyId":"e163ac2b-6e6d-4edf-b654-fb259e2528e0"},{"label":"112.5 W","value":"112.5 W","fileboyId":"b897ae69-661a-4c8e-8d2b-ec971d4a6394"},{"label":"150 W","value":"150 W","fileboyId":"bb64e7df-4753-4c7e-a94a-427133f92dee"},{"label":"200 W","value":"200 W","fileboyId":"53d7fd01-5067-47eb-98bc-ca32f15b71fd"}],"limitChoices":{},"validResponse":["200 W"],"fileboyImageId":"d47a6a21-7845-4272-a752-114fa94d102c"}}
Look at the slide below to work out the answer.