Water Cycle
What are the three main parts of the water cycle?
Evaporation, Condensation and Precipitation.
What kind of system is the Water Cycle?
A type of system in which a new substance is not formed.
Physical Change.
What is matter made of?
Particles.
What was Democritus's scientific contribution?
The atomic theory.
What is the draining away of water (or substances carried in it) from the surface of an area of land, a building or structure, etc?
Runoff
What kind of system allows energy and matter to transfer into or out of the system boundary?
Open System
The change of a substance or material into a different substance or material with different properties.
Chemical Change.
What is matter?
Anything that has weight or takes up space.
What scientist made the discovery of electrons and learned that atoms are made of smaller pieces?
JJ Thomson
What is it called when clouds form from water vapor changing from a gas to a liquid?
Condensation
Boiling water on the stove is what kind of system?
Chopping wood is an example of what change?
Physical Change.
What are the three states of matter?
Solids, liquids and gases.
What was Niels Bohr known for?
For his services in the investigation of the structure of atoms
What is transpiration?
Water vapor that leaks through plants.
What kind of system is a water bottle?
A closed system.
An apple rotting is an example of what kind of change?
Chemical change.
What state(s) of matter make up a human being?
Solids- Bones
Liquids- Blood
Gases- Oxygen
What scientist is best known for discovering gravity?
Isaac Newton.
What is the ideal conditions for rain to form?
Hot ocean and cold atmosphere.
What is a system enclosed by rigid immovable walls through which neither mass nor energy can pass?
An isolated system.
Getting sunburnt is what kind of change?
A chemical change.
Why can't your hand pass through a solid object but it can pass through gas and liquid?
Because of the distance between the particles. Gas particles are spread out, they barely touch, and liquids are just spread out enough to stick your hand through.
What scientist was a Quaker?
John Dalton.