What is the journey around the sun by earth called, and how long does it take?

A4.86 g piece of metal was placed in a graduated cylinder containing 15.5 ml of water. the water level rose to 17.3 ml. what is the density of the metal. i need the steps of how to solve it to so i can use a formula to work out other problems.

What happens to the temperature of a substance when the average kinetic energy of its particles increases?

Which of the following is not true about the atomic model of substances?