Just think about technology… Yes, the phone in your pocket, the radio in your car and even your computer and they have come a long way in a very short space of time.
You may use the internet all the time but do you really know what protects you against viruses, malware and malicious software? Some people devote their lives to create deadly software that can actually deem a machine unusable.
At the bottom of this article, there are some links to official software for your protection.
Forces are one of the most confusing topics as any learning scientist will tell you. Primarily, you need to know Newton’s First Law:
An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
Everyone uses a cool pack at some time for an injury these days. They come in many different sizes and all use a chemical reaction producing an endothermic reaction (absorbs heat to go cold).