Mechanical energy is a combination of the energy of motion or position. This type of energy describes objects that are moving or could move. A moving ball can have energy from motion. An arrow can also have the energy of motion. Both are types of mechanical energy. Can you think of some other examples? Where does the energy of motion come from? It comes from the energy created by position. This energy is stored energy. This means it is not moving yet, but it has the potential to move. How can you store energy? The arrow gains energy from the drawn bow. As the arrow is released, the bow releases its stored energy and puts the arrow into motion. Can you think of some other ways to store energy using position?

Question: "What kind of energy do objects that are moving or could move possess?"

Response: "Positional"

A: no

Heat supplies the energy that causes motion. The deeper you go into toward the Earths core, the hotter it gets. At the core it is really hot. All that heat tries to rise toward the surface. In the Mantle, the rock is partially melted and is able to move. As it is heated, the material in the mantle moves toward the surface. As the mantle material rises, it cools. When it reaches the Earths crust, it is mostly stopped. A little of the material can break through the surface, but not all. Instead, it begins to move horizontally. The mantle material moves horizontally away from a mid-ocean ridge crest. Toward the surface, the mantle material starts to cool. As it cools it sinks back down into the mantle. These areas are where deep sea trench occur. The material sinks back down to the core. The system operates like a giant conveyor belt. The motion due to heating and cooling is called convection.

Question: "Does rock move more at the surface of the earth or at its core?"

Response: "At the surface because there is more space"

A: no

Miss Anderson dined out, and preferred to suppose that she had no time to think until she was on her way home along the empty road round Jakko at eleven o'clock that night. Then it pleased her to get out of her rickshaw and walk. There was an opulent moon, the vast hills curving down to the plains were all grey and silvery, and the deodars overhead fretted the road with dramatic shadows. About her hung the great stillness in a mighty loneliness in which little Simla is set, and it freed her from what had happened, so that she could look at it and cry out. She actually did speak, pausing in the little pavilion on the road where the nursemaids gather in the daytime, but very low, so that her words fell round her even in that silence, and hardly a deodar was aware. 'I will not go now,' she said. 'I will stay and realize that he is another woman's husband. That should cure me if anything will--to see him surrounded by the commonplaces of married life, that kind of married life. I will stay till she comes and a fortnight after. Besides, I want to see her--I want to see how far she comes short.' She was silent for a moment, and the moonlight played upon her smile of quiet triumph. 'He cares too,' she said; 'he cares too, but he doesn't know it, and I promise you one thing, Madeline Anderson, you won't help him to find out. And in five weeks I will go away and leave my love where I found it--on a mountaintop in the middle of Asia!'

Question: "Why does Miss Anderson not want to go now?"

Response: "She loves the moon"

A:
no