10/3/2011 1 Energyistheability todoworkormake thingsmoveor change. Energycooksyourfood powersyourcomputer, andmovesyourmuscles. Itrunsyourcellphones anditheatsandcools yourschoolandhouse. 10/3/2011 2 MechanicalEnergyistheenergyofmovingobjects. Wheneveryoumoveyourbody,youareusingmechanical energy.Machine...
Renewable Energy Sunlight – using solar cells to trap the sun's energy. Hydroelectric power makes electricity by using the energy from falling water. Wind power can drive a turbine with a propeller and make electricity. Biofuels are fuels that are made from plants, for example ethanol made fro...
To do stuff like this, a cell needs energy. Energy is the ability of things in the universe to do work; to move or manipulate a thing; to create change. This ability cannot be created or destroyed. The set amount of energy in the universe will never change. We don’t know why, it...
is the ability and strength to do active physical things and the feeling that you are full ofphysical power and life.A. EnergyB. MatterC. Cover 答案 【解析】A相关推荐 1【题目】()21. is the ability and strength to do active physical things and the feeling that you are full ofphysical ...
Two things are necessary for work to occur. First, force—or energy—must be applied to the object. If no energy is used, no work has been done.Second, the object must be moved a distance. If the object is pushed or pulledbut it doesn’t move, no work has been done.When we move...
结果1 题目The is the ability to remember things.A. memory B. energy C. knowledge 相关知识点: 试题来源: 解析 A 考查名词,memory记忆,记忆力;energy能力,能量;knowledge知识,了解。根据题意,去记住东西的能力就是指记忆力,故选A。反馈 收藏
Energy is the ability to do work.Solar energy comes from the Sun.There is also energy that comes from wind and water. But do you know that energy can come from people,too?When you pedal a bike,you produce energy.You use your legs to push the pedals.Your energy is transferred(转移) ...
Energy is the ability to do work. Solar energy (太阳能) comes from the Sun. There is also energy that comes from wind and water. 1When you ride a bike, you produce energy. You use your legs to push the pedals. Your energy is transferred (转移) to the bike. That makes the bike ...
Energy is the ability to do work. Solar energy (太阳能) comes from the Sun. There is also energy that comes from wind and water. But do you know that energy can come from people, too? When you pedal (踩踏板) a bike, you produce energy. You use your legs to push the pedals. You...
We use that energy to work and play. We learned thedefinitionof energy in the introduction: Energy Is the Ability to Do Work. Energy can be found in a number of different forms. It can be chemical energy, electrical energy, heat (thermal energy), light (radiant energy), mechanical energy...