Higher:
I can explain what luminosity is and examples of where it happens.
Middle:
I can describe luminosity using a complex sentence.
Lower:
I can describe luminosity using a simple sentence.
Higher:
I can explain that the brightness of the Sun prevent other stars from being seen.
Middle:
I can explain that the stars don't move but the Earth rotates.
Lower:
I can describe how the Earth rotates.
Higher:
I can explain how luminosity works using an example.
Middle:
I can use simple equipment to show how luminosity can vary.
Lower:
I can think of an example of how luminosity works and is used.
Why is it easy to see a torch at night compared to seeing torchlight when it's light?
Presentation - starter slide.
Answer questions and take part in activities during the presentation.
Stop the presentation at the relevant slides: Talk Partners; AfLs; Songs.
Take part in the Choral Response Questions activity (see Assessment section) after the Keywords/Rocket Words slide.
Presentation
In today's expert film Dr Sam Rowe explains where to find stars in the night sky.
Presentation - expert film
Glow in the Dark!
Watch the Mission Assignment film to gain more understanding of this activity.
This activity will help children to understand the luminosity in space between the Moon and the Sun/stars, putting it in an everyday context.
Bike reflector/reflective strip
Torch
Dark room or night time
Ask the children to complete the Handout to show learning from today's lesson about luminosity.
Quiz
With their talk partners, the children are to go through the quiz at the end of the presentation and answer the questions.
Quiz in presentation
Handout
What is luminosity?
What makes the Moon and stars stand out?
Luminosity means...
The stars and the Moon only appear at night because...
To illuminate, the Moon and stars need...
The Science Behind the Science
Light is measured in lumens, hence brightness is called luminosity. A regular bulb produces about 800 lumens. The Sun's luminosity is usually measured in lumens per square foot (lux) and measures around 100,000 lux at the surface of the Earth (at noon, with no cloud). On a cloudy day, it could be as low as 1,000 lux. Stars in the sky measure around 2-8 micro-lux on Earth.
Objects that are reflective are able to bounce back the light that hits them without absorbing it. A purely reflective substance would reflect all of the light that hits it perfectly. This is similar to how we see the colour white, as all of the colours in the spectrum of visible light are reflected, creating the white colour. However, the difference is that a white object scatters the light that hits it, while a reflective material bounces it back in a predictable way, creating a reflection.
Chinese - Compulsory Education Primary School Science Know some natural phenomena associated with the Sun and Moon, know the weather, the impact of soil on plants and human life. Chinese - Science Inquiry - Express communication Under the guidance of the teacher can briefly describe the inquiry process and conclusions and discuss and communicate with classmates.
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