Science, Nature and Tech

Green and Growing: The Life of a Seed

As you know, there is a vast number of different kinds of plants growing all over the world, from snowy slopes to Amazon rain forests to dusty deserts: plant life is everywhere. So how does it all work? Lets start with seeds.

 

 The Life of  a Seed

Picture a seed – I am sure you have all seen them. It will have a hard outer shell to protect it. When it has found the right conditions of warmth and moisture, this shell will crack or split as a root pushes its way out to take hold in the soil. Then the plant will start to grow and a shoot will make its way upwards, with the root growing down, to draw moisture from the ground and provide some balance for the plant, keeping it firm in its place.

Just like you and me, plants need food to grow. Their food is very different from ours, of course! Here’s what they do: the leaves draw water up from the roots, through the stem, and they also soak up sunlight and air. These three things combine to make food in the leaves, where it is stored. Now think of an onion. It is formed to store the food for the plant.

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Science, Nature and Tech

Water and Engineering – Water, Wonderful Life

water and engineering

Dr Lesley Beeton is a scientist, who studies what the DNA code tells us about human life and health. She has always loved science, and believes that science doesn’t just happen in laboratories. It happens all around us. Science keeps aeroplanes flying, electricity flowing, and the internet speedy.
Dr Beeton  grew up in South Africa. Some of you may have traveled there for your holidays, to see the game reserves or Table Mountain. But even if you haven’t been there, we can all still learn something from the experiences of southern Africa.

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Science, Nature and Tech

Facebook For Kids – Good or Bad?

Do you use Facebook? While it is officially banned for under 13 years, a survey last year showed that almost half of Britain’s pre-teens have a Facebook account. Joanna Bradey tells us what she likes about Facebook.

 

Facebook: What’s it all about?

 

Facebook is a website created in 2004 by a US college student Mark Zuckerberg. It started off as a way of college students to network with each other, which quickly spread throughout the world, and now has millions of members. Facebook works by people registering and creating a profile for themselves, and then becoming ‘friends’ with other people. A user can update their status to let their friends know what they’re up to, upload photos to share, send private messages to each other, and play games.  You need to be at least 13 years old to be a member, and Facebook is banned in some countries altogether, like Syria and Iran.

The thing that I like about Facebook is that it is a quick and easy way to keep in touch with all those people I have met in real-life but don’t have time to write to or call them, like old workmates or family that have moved away. I can upload a photo and anyone I am friends with can see it, and comment on it. In the days before Facebook, if I wanted to share a photo with everyone, I would have to print out lots of copies and send them in the post, which is very expensive and time-consuming. Since I joined Facebook, I am better at communicating with people and I enjoy seeing what all my friends and family are doing. I think that I know them better and it’s easy to keep-in-touch.

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Popular, Science, Nature and Tech

Can Too Much Screen Time Damage Your Eyes?

I bet you’ve heard some adults warn that too much screen time can damage your eyes. Some even say that sitting too close to a screen can be harmful. This is an idea that’s been around for decades but is there any truth to it?

In the latest of our Fact or Fable series, Sam investigates.

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