Answer:
electroluminescence is a production of light by the flow of electrons, as within certain crystals. An example is at most resataurants with a bright sign that either says open or closed.
Explanation:
Planets move slower when they are furthest from the sun. But when they are closer they move faster because of the gravitational pull of the Sun.
Hope this helps.
Summer Solstice is what happens when part of the Earth's surface is tilted towards the sun..
You convert kinetic energy into thermal energy when you rub two sticks together.
