What is brightness?

Choose 1 answer

A tower topped with a very bright light.

The amount of light given off by something is called its luminosity.

How brightly something appears to shine.

The very bright light at the top of a lighthouse.

A device powered by electricity which gives off light.

{"type":"multi-choice","id":"3259","dataJson":{"type":"multi-choice","slide_id":19078,"key":3259,"prompt":"\u003cp\u003eWhat is brightness?\u003c/p\u003e","validResponse":[3748],"use_data":false,"question_body":"","question_video_url":"","question_fileboy_image_id":"","options":[{"label":"A tower topped with a very bright light.","value":3750,"fileboyId":"af648a93-0c27-4e67-b0e8-31dc9ddde965"},{"label":"The amount of light given off by something is called its luminosity.","value":3751,"fileboyId":"adf04c08-a100-4c45-9ee2-6a9b7b02d6e7"},{"label":"How brightly something appears to shine.","value":3748,"fileboyId":"f5c3ab5d-333a-4970-9bb9-40b0ccaae8d1"},{"label":"The very bright light at the top of a lighthouse.","value":3752,"fileboyId":"e39ddf37-d723-4c91-a138-ad6d3bd2dd2c"},{"label":"A device powered by electricity which gives off light.","value":3749,"fileboyId":"5ec9506d-a29f-41c7-b0fc-9063fb45d512"}],"question_data":{"body":"The brightness of a star depends on two things: first, how much luminosity the star has; and second, how far away the star is.\n","video":{"type":"fileboy","url":"3d4b714b-ff29-42f1-a856-4c0e8f30e07a"},"image_url":null},"limitChoices":{"min":1,"max":1}}}

What is a beacon?

Choose 1 answer

A device powered by electricity which gives off light.

The very bright light at the top of a lighthouse.

A tower topped with a very bright light.

How brightly something appears to shine.

The amount of light given off by something is called its luminosity.

{"type":"multi-choice","id":"3263","dataJson":{"type":"multi-choice","slide_id":19070,"key":3263,"prompt":"\u003cp\u003eWhat is a beacon?\u003c/p\u003e","validResponse":[3752],"use_data":false,"question_body":"","question_video_url":"","question_fileboy_image_id":"","options":[{"label":"A device powered by electricity which gives off light.","value":3749,"fileboyId":"5ec9506d-a29f-41c7-b0fc-9063fb45d512"},{"label":"The very bright light at the top of a lighthouse.","value":3752,"fileboyId":"e39ddf37-d723-4c91-a138-ad6d3bd2dd2c"},{"label":"A tower topped with a very bright light.","value":3750,"fileboyId":"af648a93-0c27-4e67-b0e8-31dc9ddde965"},{"label":"How brightly something appears to shine.","value":3748,"fileboyId":"f5c3ab5d-333a-4970-9bb9-40b0ccaae8d1"},{"label":"The amount of light given off by something is called its luminosity.","value":3751,"fileboyId":"adf04c08-a100-4c45-9ee2-6a9b7b02d6e7"}],"question_data":{"body":"Have you ever been to a lighthouse? It is a very tall building with a room at the top which is called the lantern room. This is where the beacon shines from.","video":null,"image_url":"https://www.developingexperts.com/file-cdn/images/get/ab0536e6-5dcf-443e-8ca5-b20c3a6faf6d?transform=resize:800x600;format:webp;quality:80"},"limitChoices":{"min":1,"max":1}}}

What is a torch?

Choose 1 answer

The amount of light given off by something is called its luminosity.

How brightly something appears to shine.

The very bright light at the top of a lighthouse.

A device powered by electricity which gives off light.

A tower topped with a very bright light.

{"type":"multi-choice","id":"3260","dataJson":{"type":"multi-choice","slide_id":19071,"key":3260,"prompt":"\u003cp\u003eWhat is a torch?\u003c/p\u003e","validResponse":[3749],"use_data":false,"question_body":"","question_video_url":"","question_fileboy_image_id":"","options":[{"label":"The amount of light given off by something is called its luminosity.","value":3751,"fileboyId":"adf04c08-a100-4c45-9ee2-6a9b7b02d6e7"},{"label":"How brightly something appears to shine.","value":3748,"fileboyId":"f5c3ab5d-333a-4970-9bb9-40b0ccaae8d1"},{"label":"The very bright light at the top of a lighthouse.","value":3752,"fileboyId":"e39ddf37-d723-4c91-a138-ad6d3bd2dd2c"},{"label":"A device powered by electricity which gives off light.","value":3749,"fileboyId":"5ec9506d-a29f-41c7-b0fc-9063fb45d512"},{"label":"A tower topped with a very bright light.","value":3750,"fileboyId":"af648a93-0c27-4e67-b0e8-31dc9ddde965"}],"question_data":{"body":"The beam of light that comes out of a lighthouse can be seen from very far away. It is like a very large torch, shining light in a strong beam to illuminate all around.\n","video":null,"image_url":"https://www.developingexperts.com/file-cdn/images/get/cea6bb9d-7c0a-4442-b902-0c4d67de12d1?transform=resize:800x600;format:webp;quality:80"},"limitChoices":{"min":1,"max":1}}}

What is a lighthouse?

Choose 1 answer

A tower topped with a very bright light.

The amount of light given off by something is called its luminosity.

The very bright light at the top of a lighthouse.

How brightly something appears to shine.

A device powered by electricity which gives off light.

{"type":"multi-choice","id":"3261","dataJson":{"type":"multi-choice","slide_id":19070,"key":3261,"prompt":"\u003cp\u003eWhat is a lighthouse?\u003c/p\u003e","validResponse":[3750],"use_data":false,"question_body":"","question_video_url":"","question_fileboy_image_id":"","options":[{"label":"A tower topped with a very bright light.","value":3750,"fileboyId":"af648a93-0c27-4e67-b0e8-31dc9ddde965"},{"label":"The amount of light given off by something is called its luminosity.","value":3751,"fileboyId":"adf04c08-a100-4c45-9ee2-6a9b7b02d6e7"},{"label":"The very bright light at the top of a lighthouse.","value":3752,"fileboyId":"e39ddf37-d723-4c91-a138-ad6d3bd2dd2c"},{"label":"How brightly something appears to shine.","value":3748,"fileboyId":"f5c3ab5d-333a-4970-9bb9-40b0ccaae8d1"},{"label":"A device powered by electricity which gives off light.","value":3749,"fileboyId":"5ec9506d-a29f-41c7-b0fc-9063fb45d512"}],"question_data":{"body":"Have you ever been to a lighthouse? It is a very tall building with a room at the top which is called the lantern room. This is where the beacon shines from.","video":null,"image_url":"https://www.developingexperts.com/file-cdn/images/get/ab0536e6-5dcf-443e-8ca5-b20c3a6faf6d?transform=resize:800x600;format:webp;quality:80"},"limitChoices":{"min":1,"max":1}}}

What does luminosity mean?

Choose 1 answer

A device powered by electricity which gives off light.

How brightly something appears to shine.

The amount of light given off by something is called its luminosity.

The very bright light at the top of a lighthouse.

A tower topped with a very bright light.

{"type":"multi-choice","id":"3262","dataJson":{"type":"multi-choice","slide_id":19074,"key":3262,"prompt":"\u003cp\u003eWhat does luminosity mean?\u003c/p\u003e","validResponse":[3751],"use_data":false,"question_body":"","question_video_url":"","question_fileboy_image_id":"","options":[{"label":"A device powered by electricity which gives off light.","value":3749,"fileboyId":"5ec9506d-a29f-41c7-b0fc-9063fb45d512"},{"label":"How brightly something appears to shine.","value":3748,"fileboyId":"f5c3ab5d-333a-4970-9bb9-40b0ccaae8d1"},{"label":"The amount of light given off by something is called its luminosity.","value":3751,"fileboyId":"adf04c08-a100-4c45-9ee2-6a9b7b02d6e7"},{"label":"The very bright light at the top of a lighthouse.","value":3752,"fileboyId":"e39ddf37-d723-4c91-a138-ad6d3bd2dd2c"},{"label":"A tower topped with a very bright light.","value":3750,"fileboyId":"af648a93-0c27-4e67-b0e8-31dc9ddde965"}],"question_data":{"body":"Luminosity is a word that means how much light something gives out. In a lighthouse the luminosity needs to be high. Why is this?\n","video":null,"image_url":"https://www.developingexperts.com/file-cdn/images/get/d78718f8-7663-4057-8033-899474cca1ae?transform=resize:800x600;format:webp;quality:80"},"limitChoices":{"min":1,"max":1}}}

Answer incorrect

Look at the slide below to work out the answer.