This is the basic unit of all matter.
What is an atom?
This is the energy an object has due to its motion.
What is kinetic energy?
This sphere includes all the land on Earth—mountains, valleys, and soil.
What is the geosphere?
Plants are this type of organism because they make their own food.
What is a producer?
This process allows plants to make their own food using sunlight.
What is photosynthesis?
The three main states of matter are solid, liquid, and this.
What is gas?
This type of energy comes from the sun and supports almost all life on Earth.
What is solar energy?
This natural process wears down rocks over time.
What is weathering?
Animals that eat plants or other animals are called this.
What is the consumer?
The tiny pores on the underside of leaves where gas exchange occurs are called this.
What are stomata?
When water changes from a liquid to a gas, this process occurs.
What is evaporation?
This force slows down moving objects when they rub together.
What is friction?
Rain, snow, and sleet are forms of this.
What is precipitation?
An animal that breaks down dead organisms is known as this.
What is a decomposer?
This plant part anchors the plant and absorbs water and nutrients.
What are the roots?
This type of change does not form a new substance, just changes its appearance.
What is a physical change?
When a ball is sitting at the top of a hill, it has this kind of energy.
What is potential energy?
The continuous movement of water around Earth is called this.
What is the water cycle?
A series of steps showing how energy moves through an ecosystem is called this.
What is a food chain?
These carry water from the roots to the leaves.
What are stems?
When vinegar and baking soda mix, they create a chemical reaction and release this gas.
What is carbon dioxide?
Energy that travels in waves and can be seen with the eyes is called this.
What is light energy?
The thin layer of gases that surrounds Earth is called this.
What is the atmosphere?
When all food chains in an ecosystem are connected, it forms this.
What is a food web?
This is the reproductive part of a flowering plant.
What is the flower?