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bleach to make white or lighter in color by using a chemical or sunlight. [1/3 definitions]
chlorophyll the green matter in the leaves and stems of plants that is necessary to produce food for plants from sunlight.
exposure If your skin is getting exposure to sunlight, it means sunlight is able shine on your skin and affect your skin. If you don't go outside very often, you will get little exposure to sunlight. If you wear a bathing suit outside, you will get more exposure to the sun than if you wear a shirt and jeans. [1/4 definitions]
freckle a light brown dot or mark in the skin, often brought out by exposure to sunlight.
fungus one of a large group of living things that appear similar to plants but cannot make their own food using sunlight in the way plants do. Fungi consume plant, animal, and other living matter. Mushrooms, yeasts, and molds are fungi. Fungi help decompose dead plants and animals.
greenhouse effect the warming of the earth's surface and lower atmosphere that is caused by reflected sunlight being trapped by certain gasses that are emitted on earth. Light from the sun travels through space and enters earth's atmosphere, naturally warming the planet and making it possible for humans to live on it. Once sunlight hits the earth, though, it bounces back into space. If it did not go back into space, the earth would be too hot to live on. Gases such as carbon dioxide and methane that are sent into the air from earth are capable of trapping sunlight that should return to space. The warmth created by the trapped sunlight is called the greenhouse effect. The greenhouse effect can be seen on other planets in the universe if gases emitted from the planet trap light from a star.
greenhouse gas any of the gases that are sent out from a planet that are capable of trapping sunlight in the planet's atmosphere, which causes the planet as a whole to become warmer. Carbon dioxide and methane are two of these gases.
photosynthesis the process by which a green plant uses sunlight to change water and carbon dioxide into food for itself.
plant one of a large group of living things that use sunlight to make their own food. Most plants have leaves, stems, roots and either flowers or cones. Plants use a green pigment called chlorophyll to absorb energy from sunlight. Grasses, trees, vines, vegetables, cactuses, ferns and mosses are plants. [1/5 definitions]
radiation When we talk about radiation, we mean particles or waves of energy that are sent out by sources of heat or light. Sunlight is a form of radiation, for example. Some forms of radiation are dangerous. Even sunlight can be bad if people get too much of it.
renewable (often pl.) a source of energy that cannot be exhausted through human use, such as sunlight, wind, geothermal heat, or water flow. [1/2 definitions]
set When you set a plate on the table, you put the plate on the table in a place that you choose. When you set a thing somewhere, you choose that place for a particular reason. If you set a plant by a window, for example, it is probably because you want the plant to get sunlight. [1/17 definitions]
sun the heat and light energy given off by the sun; sunlight. [2/5 definitions]
sunbeam A sunbeam is a ray of light that we can see coming down from the sun. Sunbeams look like thin lines of sunlight coming down through the sky. On a sunny day with blue sky, we don't really see sunbeams in the sky, but little children usually show sunbeams when they paint a picture of the sun on a clear day.
sunglasses a pair of eyeglasses with dark lenses to protect the eyes from bright sunlight.
sunlight Sunlight is light that comes from the sun.
sunscreen Sunscreen is a substance used in things like skin lotions and creams to protect the skin from sunburn, and from damage that sunlight can do to the skin. The lotions and creams that contain this type of substance are often called "sunscreen" too.
suntan a dark coloring of the skin as a result of exposure to strong sunlight or a sun lamp.