a blood vessel that carries blood from the heart to the body
What is an artery
100
a molecule that absorbs red and blue light and reflects green. it also helps in he process of photosynthesis
What is chlorophyll
200
zone where cold air mass overtakes a mass of warm, moist air
What is a cold front
200
the number of proptons in the nucleusof an atom
What is the atomic number?
200
matter that is shapeless and expands to fill any closed container is is placed in.
What is a gas
200
the organ that holds urine until it is eliminated
What is the bladder
200
organ that cleans and filter blood
What is a kidney
300
scientist who studies the weather
What is a meteorologist?
300
the smallest particle of an element
What is an atom
300
two or more substances together
What is a mixture
300
smallest blood vessel that serves our cells with oxygen
What is a capillary
300
the group of xylem and phloem tubes in a vascular plant
What is a vascular bundle
400
the force of attraction between two objects
What is gravity
400
a condition that causes pain due to super saturated blood with nitrogen
What is the bends
400
particles made of two or more atoms that are held together with bonds. carbon dioxide and sugar are examples of these. the result of putting building blocks together.
What is a molecule
400
the basic unit of life
What is a cell
400
the part of the digestive system between the stomach and large intestine that absorbs nutrients from digested food.
What is small intestine
500
reactions that change atomic structure and create heat and light energy, such as the reactions that occur on the sun
What is thermonuclear reaction
500
A substance made of two or more different kinds of atoms. Carbon dioxide and sugar and water are compounds.
What is a compound?
500
the center of an atom
What is a nucleus?
500
the process by which energy for life is released from food in cells
What is cellular respiration
500
anything you can change in an experiement that might affect the outcome