| | (ESS4000) atmosphere | Definition: The atmosphere is the air around the Earth where weather conditions form. | Example: →Scientists worry that harmful substances are hurting the atmosphere. |
| (ESS4000) biosphere | Definition: The biosphere is the earth’s surface and atmosphere where there are living things. | Example: →Birds, trees, and worms all thrive in the biosphere. | | (ESS4000) hemisphere | Definition: A hemisphere is one half of the earth. | Example: →In the northern hemisphere, the weather is usually warmest in July and August. | | (ESS4000) sphere | Definition: A sphere is a three-dimensional round shape, like a ball. | Example: →The balloons were inflated into a variety of colorful spheres. |