Thermal energy has a main concept called Equilibrium. Choose an option below that best explains how thermal equilibrium is demonstrated. 1 The man in the video had a lot of layers on and then he took off his jacket to show how much heat he had and compare himself to the environment
2The hand prints are on his chest because he was unable to maintain his personal equilibrium and therefore continued to suffer through the cold weather
3In the beginning he was hot, but you could not see it because of his jacket. When he took his jacket off you could still see that his hair was acting like an insulator, much like the fur of a polar bear working to maintain his head heat and not let his internal organs begin to shut down
4As time went on the temperature of his skin was decreasing because his body started at a higher temperature than the air around him and continued to share energy until all molecules would be balanced

For a family dinner, jose’s mom baked a loaf of bread. during the meal, his grandmother commented, “this bread is so dense! ” what do you think his grandmother meant by the word dense? you have some ideas regarding density already, but this experiment will enrich your understanding of the relationship between mass, volume and the density of objects. when making measurements in this experiment we will be using si units, the international system of units. the purpose of using si units is to have the ability to communicate and compare data results with other experiments without having to make conversions. measurement symbol si unit length m meter mass kg kilogram volume l liters density kg/l kilograms per liter any calculations that are performed during this experiment will ultimately be reported in scientific notation. recall that scientific notation is extremely important when we have data that is extremely small or large. scientists rely on a standard form of communication to quickly make hypotheses and judgements based on data. what is the density of block a? a0kg/l what is the density of block b? a1kg/l what is the density of block c? a2kg/l what is the density of block d? a3kg/l what is the density of block e? a4kg/l which block is the densest? a5