Varsity - Science Flashcards
What are the three methods of thermal energy transfer?
convection, conduction, and radiation
Identify the biome with a name meaning “treeless plain,” which is noted for its frost-molded landscapes, extremely low temperatures, little precipitation, poor nutrients, and short growing seasons.
Tundra
What is the name for ions in solution that don’t react with the other ions?
Spectator (ions)
What is the theoretical limit for a population’s growth within a habitat?
Carrying Capacity
Name the pile of debris composed of rock fragments deposited by a retreating glacier.
Moraine
Calculate the molarity of a solution containing 160 grams of sodium hydroxide in two liters of water.
2 (molar or moles/liter)
What term is used to describe how each strand in a double-stranded DNA molecule runs in opposite directions?
Antiparallel
What 2 compounds are produced by the complete combustion of a hydrocarbon?
Carbon Dioxide (CO2) and Water (H2O)
What does the area under an acceleration time graph represent about the motion of an object?
Change in velocity (must say both change and velocity)
The light reactions of photosynthesis occur on what part of the chloroplast?
Thylakoid Membrane
What unit is equivalent to kilograms meters per second squared?
Newtons
What gas makes up about 97% of Venus’ atmosphere?
Carbon Dioxide
Name the biology term for the protein filaments that, along with myosin, allow muscles to contract.
Actin
What is the unit of magnetic field strength?
Tesla
How many electrons are there in the outer energy level of a potassium atom?
1
What two substances will form from the heating of calcium carbonate?
Calcium Oxide and Carbon Dioxide
Through what galactic process does a large galaxy merge with another galaxy?
Galactic Cannibalism
What term is used for a group of three bases on the DNA molecule?
Codon
What type of organism is found at the second trophic level of the food chain?
Herbivores
What magnesium metal is placed in hydrochloric acid, which element is reduced, and which element is oxidized?
Magnesium is Oxidized, Hydrogen is Reduced
A cyclist travels 5 miles east and then 12 miles south. What is the magnitude, in miles, of the cyclist’s displacement?
13 (Miles)
Name the cell organelles that are stacked, flattened membranes that sort proteins and other cellular substances and package them into membrane-bound structures called vesicles.
Golgi Bodies
The loudness of a sound wave is related to what physical measurement of the sound wave?
Amplitude (or Pressure)
On the geologic time scale, in what current epoch is the Earth?
Holocene Epoch