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Exploring Density -- Why Don't Ships Sink in the Red Sea?

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 Exploring Density Why Don't Ships Sink in Red Sea? The City School arranged a science fair. Children from the entire region enthusiastically participated in this project.  The main goal of this activity was to develop students' scientific knowledge and skills so they could apply them to problems in real life. Discovering Density was the subject chosen by my students from Class 5C. Why don't ships sink in the Red Sea, I heard them ask. The investigation's main issue was resolved, and we got to work solving it together. We eventually agreed that the Red Sea is the saltiest sea in the world and that salt water has a higher density than freshwater, which keeps ships from sinking and allows them to float. After developing the hypothesis, we intended to execute the test to validate and assess it. Some examples of density for different fluids and materials was collected by researching on internet which are: - Fresh water: 1,000 kg/m3 - Salt water: around 1,025 kg/m3 - Certai...

Friction vs Speed

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   Exploring Friction How does friction effect the speed of a toy car? The City School arranged a science fair. Children from the entire region enthusiastically participated in this project.  The main goal of this activity was to develop students' scientific knowledge and skills so they could apply them to problems in real life. Exploring Friction and Speed was the subject chosen by my students from Class 5C. How is the speed of car affected by the force and friction? The investigation's main issue was resolved, and we got to work solving it together. Hypothesis A hypothesis was developed that towel will have the most friction and hence the speed of the toy car will be least on the towel surface. After developing the hypothesis, we intended to execute the test to validate and assess it. Students worked in a group to plan and execute the experiment to record the values and observe which surface offers the best friction. Materials Required A wedged surface Towel Aluminium ...