1.
The process by which plants make their food using sunlight
2.
The layer of gases surrounding Earth
3.
The imaginary line dividing Earth into northern and southern hemispheres
4.
A large landmass; examples include Africa, Europe
5.
A mountain that erupts with lava and gases
6.
The wearing away of land by wind, water, or ice
7.
The path a planet follows around the sun
8.
The force that pulls objects towards each other
9.
A large, slow-moving mass of ice
10.
The natural home or environment of an animal or plant
11.
A resource that can be replaced naturally over time
12.
Preserved remains or traces of ancient living things
13.
Relating to the movement of Earth’s crustal plates
14.
Rain, snow, sleet, or hail falling from clouds
15.
A piece of land nearly surrounded by water
16.
The second layer of Earth’s atmosphere
17.
A dry region with little rainfall
18.
Where fresh water from a river meets salt water from the sea
19.
Earth’s spinning movement on its axis
20.
A group of stars forming a recognizable pattern in the night sky
