For many years, people have been using the sun's energy to make their homes brighter andwarmer. Today, we use special equipment and specially designed homes to capture solar energy for lighting and heating. States of Matter Grade 4 level. This site describes the states of matter, solid, liquid and gases. We use energy to do work.
Energy lights our cities.
Energy powers our vehicles, trains, planesand rockets. Energy warms our homes, cooks our food, plays our music, gives us pictures on television. Energy powers machinery in factories. Previous Create a flipbook album using your photos. You can share your flip albums on the Internet.