Hi Year 3,
Today for Science we are going to look at what shadows are and how they are formed.
What is a shadow?
Watch the video below to help you understand how a shadow is formed.
What is a shadow? For a shadow to be formed an object must block light. The object must be opaque or translucent to make a shadow. A transparent object will not make any shadow, as light passes straight through transparent objects.
The power point below will help you understand shadows better.
Watch the video below and note down any keywords.
Now complete the activity set on Education City called ‘Shadows.’ This activity will only work on a laptop.
Complete the shadow experiment. Start by checking the weather. This activity needs a day with full sunshine, so pinpoint a good, cloud-free day.
First thing in the morning (if the sun is out) go out with some chalk. Find a good spot where there won’t be any shadows from trees or fences and make a cross. You will need someone to help you. Get someone to stand on a cross. Draw around the shadow and measure how long it is. Repeat this every hour.
Draw a table like the one below and record the results.
Time taken (Hours/minutes) Length of shadow (cm)
9 hr 10 mins 87cm
What did you find out?