Energy & Motion
A harmful substance that can poison land, water, and air.
What is a pollutant?
The part of a device that sends out radio signals.
What is a transmitter?
This is another word for rock layers.
What is strata?
A quality or trait.
What is a characteristic?
A group of organs that do a particular job.
What is an organ system?
The energy of moving water.
This word means "to take in."
What is absorb?
Mineralized remains or evidence of plants and animals that lived long ago.
What are fossils?
What is exoskeleton?
The system that takes in oxygen from the air so that it can be delivered to all the body cells.
What is the respiratory system?
This type of fuel is produced in power plants using unstable elements.
What is nuclear fuel?
The amount of time it takes for a wave to complete one back-and-forth motion.
What is a wave period?
The sliding of rock and soil down a slope.
What is a landslide?
The male and female parts of a flower.
What are the stamen and pistol?
This organ breaks down fats and is connected to the small intestine.
What is the liver?
The process of burning a fuel to produce heat and light.
What is combustion?
The distance between similar points on a wave.
What is the wavelength?
A release of volcanic material.
What is an eruption?
The waxy outer covering of plant leaves.
What is cuticle?
The brain and spinal cord make up this system in the body.
What is the central nervous system?
The flow of charged particles in the same direction.
What is electric current?
The greatest height of a wave from its resting position.
What is amplitude?
A danger to humans resulting from an event.
What is a hazard?
In a plant, this is what we call a collection of small tubes that transports, or carries, materials up, down, and throughout the plant.
What is the vascular system?
Wastes are removed from the body through this system.
What is the excretory system?