้้้้have you ever seen a greenhouse. most greenhouse look like a small glasshouse. greenhouse are used to grow plants, especially in the winter. greenhouse work by trapping heat from the sun. the glass panels of the greenhouse let in light but keep heat from escaping. this causes the greenhouse to heat up, much like the inside of a car parked in sunlight, and keep the plants warm enough to live in the winter.the earth atmosphere is all around. it is the air that we breathe. greenhouse gases in the atmosphere behave much light the glass panels in a greenhouse. sunlight enters the earth atmosphere, passing through the blanket of greenhoust gases. as it reaches the earth surface, land, water, and biophere absorb the sunlight energy.