Catch up TV
Series 3: 15. Clouds & Rain and Radiator
In today’s episode, Maddie is finding out about the weather. She discovers why we have clouds and rain and how the water cycle works. We learn there are lots of different types of clouds but the clouds that make rain are called nimbus clouds. Maddie visits the national weather centre where they make the weather reports. She finds out how satellites high up in space can see the clouds moving and tell us when it might rain. Next, Maddie visits a radiator factory to find out how radiators are made to keep our houses warm. We see how big flat sheets of metal are pressed to make grooves, like teeth. The metal pieces are heated up and sealed together to make sure the water doesn’t leak out. Maddie takes her special camera on a journey along the radiator ‘washing line’ and we see how the radiators are sprayed with special paint to make them shiny.
Source: CBeebies
Most recent episodes of Do You Know?
Do You Know?
Series 4: 16. Forklift And Dried Fruit
In today’s episode, Maddie visits a forklift warehouse. She discovers how a forklift truck uses something called counterbalance to lift things really high without tipping ...
08-08-2022
CBeebies
Do You Know?
Series 4: 15. Climbing Wall And Modelling Clay
Today, Maddie is learning about colourful things! She visits a climbing wall centre, where she finds out how colourful holds on the wall help us to climb up it. And we learn how ...
05-08-2022
CBeebies
Do You Know?
Series 4: 14. Neon Sign And Revolving Door
In today’s episode, Maddie is out and about! She finds out how revolving doors can let lots of people in and out of buildings at the same time. She visits a revolving door ...
04-08-2022
CBeebies
Do You Know?
Series 4: 13. Kaleidoscope And Envelope
In today’s episode, Maddie is looking inside things! We look inside a kaleidoscope to learn how it uses three mirrors called a triangular prism to make colourful patterns. ...
03-08-2022
CBeebies
Do You Know?
Series 4: 12. Window Cleaning Cradle And Shadow
Maddie heads to a tall building to find out how a window cleaning cradle works. She discovers how really strong metal cables lift and lower the cradle, which uses tracks to move ...
02-08-2022
CBeebies
Do You Know?
Series 4: 11. Snail And Tractor
Today, Maddie learns about how different things move! She is heading to a snail garden to see how a snail uses mucus and the muscles in its body, called its foot, to move. Maddi ...
01-08-2022
CBeebies
Do You Know?
Series 4: 10. Glass Recycling And Jam
In today’s episode, Maddie is learning all about glass! She visits a glass recycling centre to see how the glass from our homes is recycled. When the glass arrives to the ...
29-07-2022
CBeebies
Do You Know?
Series 4: 9. Road Sweeper And Paper Straw
In today’s episode, Maddie is finding out about machines that use suction! She heads to a road sweeper depot to learn how all the parts of a road sweeper work together, c ...
28-07-2022
CBeebies
Do You Know?
Series 4: 8. Floating And Sand
Today, Maddie’s at sea! First she visits a boating lake, using her special underwater cameras to find out how the hull of a boat is shaped to help it float on water. She l ...
27-07-2022
CBeebies
Do You Know?
Series 4: 7. Bike Bell And Line Markings
Today, Maddie is on her bike! She visits a bike workshop to find out why different bike bells make different ringing sounds. Maddie uses her special slow-motion camera to see in ...
26-07-2022
CBeebies
Most popular episodes of Do You Know?
Do You Know?
Series 3: 12. Bowling Alley And Ribbon
Maddie heads to a bowling alley to find out how it works. She takes her special cameras and looks behind the lane to see where the pins end up and how they get put back in the r ...
28-06-2022
CBeebies
Do You Know?
Series 1: 22. Escalator And Wheelbarrow
Maddie is at a shopping centre. She uses special cameras to find out how an escalator works to move people from one floor to another. An animation shows the hidden cogs and chai ...
03-05-2022
CBeebies
Do You Know?
Series 1: 15. Crane And Bricks
Maddie visits a building site. She uses a special camera to see how a big crane works to move heavy objects from one place to another. An animation shows how the hydraulic mecha ...
22-04-2022
CBeebies
Do You Know?
Series 3: 13. Beehive And Mug
Maddie visits beehives on the roof of a building in the city. She finds out how honey bees make honey in the hive. Maddie puts on a special beekeeping suit before the beekeeper ...
29-06-2022
CBeebies
Do You Know?
Series 1: 25. Cake And Soft Play
Maddie is getting ready for a party. She uses a special camera and animation to find out how cake ingredients work together to make cake sponges rise in the oven. Next, Maddie v ...
06-05-2022
CBeebies
Do You Know?
Series 4: 15. Climbing Wall And Modelling Clay
Today, Maddie is learning about colourful things! She visits a climbing wall centre, where she finds out how colourful holds on the wall help us to climb up it. And we learn how ...
05-08-2022
CBeebies
Do You Know?
Series 1: 8. Blood Pressure Monitor And Cast
Maddie visits a hospital. She uses a special light to see the blood vessels under her skin and finds out how a blood pressure monitor works to check that blood is flowing freely ...
13-04-2022
CBeebies
Do You Know?
Series 2: 6. Sleeping Bag And Mattress
It's bedtime and Maddie is finding out about different things we sleep on and in! At a campsite she uses a special thermal camera to show how the layers in a sleeping bag w ...
16-05-2022
CBeebies
Do You Know?
Series 2: 17. Bubbles And Chocolate
In today's episode, Maddie is having a party! She finds out how bubbles work when we blow into bubble mixture. She shows us how the surface tension of water changes when we ...
31-05-2022
CBeebies
Do You Know?
Series 4: 6. Radio Telescope And Maze
Today, Maddie is finding things! First, she visits an observatory to see how a really big radio telescope uses powerful computers to collect radio waves from space and turn them ...
25-07-2022
CBeebies