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Biology
Chemistry
Physics
Earth science
Mixed
100
An open system.
What is a system that exchanges both matter and energy with its surroundings?
100
10mols
How many mols are is 180g of watet
100
The opposition of movement.
What is friction?
100
Air preasure
Why do our ears pop in an airplane?
100
Q=mct
What is change in temperature?
200
Cell walls or vacuoles
What does a plant cell have that an animal doesn't?
200
Two non metals in a compound.
What is a molecular compound?
200
1.36m/s West
What is the average velocity of and object going 15.0m East in 4 sevonds and then 30.0m west in 7seconds?
200
Fast moving air in the stratosphere.
What is a jet stream?
200
The idea that life can appear out of non-living matter.
What is spontaneous generstion?
300
When blood is cleaned by a machine.
What is hemodyalisis?
300
Sour
Is an ACID bitter or sour?
300
Gravity.
What is a constant downward force on earth?
300
Water
What is the biggest component in the green house effect?
300
Positively charged particle.
What is a proton?
400
Mitochondrion
Where in a plants cell does photosynthesis take place?
400
The 25th element.
What is manganese?
400
Kinetic and potential energy
What do you need, to calculate the mechanical energy of an object?
400
The driest biome.
What is the desert?
400
3%
What percent of water on earth is available for us to use?
500
The brain of a cell.
What is the nucleas?
500
Top left corner
Where is the atomic number located for an element on the periodic table?