Do you think you have fast reactions? Have you ever measured your reaction time? Did you know you can test your reaction time using just a ruler? Reaction time is the time it takes for a person to respond to a stimulus. For example, if you touch something very cold, there is a slight delay…
Did you know blood makes up around 7% of the weight of a human body? The average adult has 5 litres of blood flowing around their body in a massive network of arteries and veins transporting oxygen and nutrients to cells. Blood also removes waste, contains cells that fight infection and helps with temperature regulation….
What do you think your body would be like without bones? It’d be all wobbly like jelly. The skeleton acts like scaffolding holding up our soft tissues. It’s a bit like an internal suit of armour. This collection of skeleton activities is great for learning about the structure and function of the skeleton and how…
Olympic and sports day fever is about to start, so I’ve put together a collection of fun sport-themed science experiments and investigations. You can find out what happens to your heart rate and breathing as you exercise, make a model of a heart and lung, discover why balls bounce, test reaction time and lots more…
This collection of science experiments for learning about the human body is perfect for encouraging kids to learn about their bodies! I’ve split the ideas into three age groups: preschool, primary age ( 5-11 ) and secondary ( 12+) but these are very loose recommendations. Hopefully you’ll find something that sounds fun to try! I’ve…
This fun tooth decay experiment with egg shells is all about teeth and how to keep them healthy. First, we discussed the importance of brushing teeth every day, and then we chatted about foods that are good for your teeth and those that aren’t. Sugary, sticky foods are not good for teeth as they stick…
When we talk about bacteria and viruses making us ill, we might also hear them referred to as pathogens. A pathogen is a general term for any microorganism that can cause disease. This post looks at how bacteria are different from viruses and includes a comparison table of viruses and bacteria. What is a pathogen? Bacteria, viruses, protists and fungi can all be pathogens. Differences between…
Vaccines are a way to prevent disease. Vaccines introduce an inactive or altered form of a pathogen into the body. The altered pathogen contains the same antigen ( protein on the surface ) as the real disease causing agent. White blood cells produce antibodies specific to the antigen in the vaccine. If a vaccinated person…
2020 was definitely the year for bring very aware of how germs travel and spread between people. Luckily our bodies have lots of ways to protect us from potential pathogens. This activity is taken from my latest book Gross Science and illustrates the role snot plays in our immune system. Make a Snot Trap Snot…
If you’re immune to a particular virus or bacteria it means you already have the right antibodies in your blood ready to fight the pathogen when it enters your body. What is Natural Immunity? There are two ways a person can be naturally immune to a pathogen. When antibodies are passed from a mother to…
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