Earth Science
What is the most common element overall?
Hydrogen
What is the compound responsible for the green color of leaves?
Chlorophyll
What element does Si represent?
Silicon
What is the acceleration due to gravity on Earth?
9.81 m/s2
What is the most common element on Earth?
Iron
What is the hard/toughest part of our body
Tooth enamel
What is a noble gas?
A gas that has 8 valence electrons making it stable.
Which is faster: the speed of light or the speed of sound?
The speed of light
What percent of Earth's species are extinct today?
99.9%
What is the outer layer of our skin called?
Epidermis
What metal is a liquid at room temperature?
Mercury
What is Newton's 3rd Law of Motion?
For every action there is an equal and opposite reaction.
What is one of Stevenson's common phrases?
Sheck it out, back to attack, Chem day __day, sneeze on the truth, etc.
What is Earth's most abundant creature?
Krill
What is the largest living structure on Earth?
The Great Barrier Reef
What is an endothermic reaction?
A reaction in which the system absorbs heat.
If you mix all the colors of light, what color do you get?
White
What is the name of current geologic era?
Cenozoic
What is the percentage of water in our brain?
78%
What is the only letter that does not appear on the periodic table?
J
What is the equal and opposite force called that acts against gravity?
Normal Force