The idea behind this worksheet is that children take it outside, listen to the sounds around them and tick the things they can hear. There are three worksheets to choose from: things I can hear at the beach, in the forest and a general one. How do we hear noise? The simple explanation Sounds are…
To answer this question, you first need to understand how sound travels on Earth. In very basic terms, sound travels from the source of the sound to our ears by vibrating air molecules. Sound waves need a medium to travel through. Space is a mostly empty vacuum, so there’s no medium for sounds to travel…
This week, the U.S. government issued its first ever fine to a company for leaving space junk in space. Why is space debris a problem? Space is a pretty big place. The problem is that even a tiny piece of space junk left behind can cause massive damage if it collides with a spacecraft or…
I’ve added a few new Halloween Science Experiments to our collection this year, so I thought I’d put them in one big round-up with lots of great ideas from other bloggers, too. Here at Science Sparks, we love making science spooky! We’ve got fizzy witchy potions, creepy chia seed slime, a spooky noise maker, a…
Alloys are made by adding another element to a metal. Creating alloys allows scientists to combine the properties of different metals. If a heavy, strong metal is mixed with a light, weak metal in the correct amounts, the result is a light, strong metal. For example, pure iron is very malleable (its shape can be…
Helicopter seeds are a type of seed that spin as they fall from a tree. The spinning movement and the fact that they are light and can catch the wind allows them to travel further from the parent tree than if they just dropped to the floor. This is one method of seed dispersal used…
The pH scale measures how acidic or alkaline a solution is. It ranges between 0 and 14. Acids have a pH of less than 7. Alkalis ( or bases ) have a pH of over 7. pH 7 is neutral. How is pH measured? pH is measured using an indicator. An indicator is a dye…
Over the many years I’ve been writing Science Sparks, Autumn has always been my favourite season for designing themed activities. I love the colourful leaves, dark nights, cooler weather, and, of course, the run-up to Christmas is always exciting, too! This collection of fall science experiments and activities makes me smile every time I read…
Baking soda and baking powder can be easily confused. They have a similar function and name but work differently. Both are used to add air to mixtures, usually bread dough and cake mix. They are leaveners. The key difference is baking soda ( sometimes known as bicarbonate of soda ) needs an acid to work,…
The scientific method is the system most scientists follow when setting up an investigation. It has evolved over time, and many scientists have contributed to this way of working scientifically. What is the Scientific Method? There are several steps to the scientific method. Create a Hypothesis A hypothesis is a potential explanation for something a…
End of content
End of content