Good morning Titan Class!
Every morning at 9am Joe Wicks streams a live PE lesson - tune in here if you can!
Start with 10 minutes on TTRockstars.
Good morning Titan Class!
Ch 9 Lesson 2- Writing amounts of money.
Work through the pages below and complete workbook pages 45-46.
This week's spellings are below. Write each word THREE times and then use each one in a sentence.
Read a book from home, listen to a story on Storyline Online or login into Oxford Owl here. Click on 'My class login' and enter the username: studley password: studley
These sentences are so boring! Rewrite them in your Home Learning Journal and make them much more interesting. You could try adding some exciting adjectives.
Science - DO try this at home!
This week we are going to be trying out some fun science activities. Each of these will have a short demonstration video and step-by-step instructions. If you like, you can send it a photo or video of you doing the activity!
In this activity you'll be tipping glasses of water upside down and there will probably be some spillages along the way. We recommend trying the trick outside, in a bathroom or at the very least over a bowl! You should definitely practise the motion a couple of times before trying it with a person.
There are three main forces that have an effect when we turn our glass of water upside down. Gravity pulls down on the water, and is the force that makes the water pour out of a glass.
There are also upward forces on the water due to both air pressure, which pushes on everything around us all the time (in this case the air will be pushing up through the mouth of the glass) and surface tension, which tries to hold the water together across the mouth of the glass.
Surface tension is what gives water an elastic-like skin at the surface. This elastic skin has real effects – it’s what pulls water into droplets like you might see on a spider’s web early in the morning, it’s what holds up water strider bugs walking across ponds and it’s what lets you overfill a glass before it spills.
This trick makes use of the fact that the strength of surface tension depends on the size of the hole; the smaller the hole, the stronger the surface tension. Without a hanky, the hole is large and the surface tension is nowhere near strong enough keep the water together. The upward forces aren’t big enough to balance the downward force of gravity and so the water pours out (and as the water moves out of the way, air pressure makes the air rush into the glass to replace the water).
A hanky is made of a material that’s woven together and has tiny holes. Putting one across the mouth of the glass makes the hole through which water is trying to get through much smaller and so the surface tension much stronger. There is a strong stretchy skin across each hole. The surface tension, combined with the push due to air pressure is large enough to balance the force of gravity so that the water stays inside the glass – and you stay friends with your family.
If you want to investigate further with your family, you can put the strength of surface tension to the test (do this bit over a sink, not over somebody’s head!)
Now that you’ve found out about surface tension, gravity and air pressure, can you work out what’s going on?
The surface tension of water is pretty strong, but it’s the element mercury that has the highest surface tension.