Chemistry/IPC
As ice cream freezes, its molecules:
A) Absorb heat energy and move farther apart.
B) Absorb heat energy and move closer together.
C) Release heat energy and move father apart.
D) Release heat energy and move closer together.
Mass extermination efforts in the first half of the 20th century decimated the gray wolf population. Which of the following was not an effect on the other existing populations in the Western United States?
F.The elk populations grew exponentially.
G.Willows and other riparian plants were wiped out.
H.Fish populations in the streams increased.
J.Insect populations, such as mosquitoes, increased.
The folding and faulting of rocks is caused by:
A.the movement of tectonic plates
B.ancient weathering and erosion
C.sediments deposited by rivers
D.magnetic reversals of the North and South Poles
Muscle cells of one animal differ from muscle cells of another animal due to differences in –
A.DNA
B.the cell cycle
C.gene expression
D.genetic sequence
Which of the following best describes why a new scientific hypothesis might be accepted or rejected?
A) Popular support.
B) Moral Beliefs
C) Observational evidence.
D) Historical support.
Using his periodic table, Mendeleev was able to --
a) Discover new elements
B) Explain the periodicity of unknown elements.
C) Create artificial elements.
D) Predict the properties of unknown elements.
Conserving renewable and nonrenewable resources as it pertains to sustainability involves ―
F.deforestation in order to clear-cut land for planting agricultural crops
G.catching large numbers of sharks to preserve the number of fish in the food pyramid
H.leaving an ecosystem in the about same state as before the resource was used
J.using fossil fuels instead of wind turbines to preserve bird and bat populations
Islands in the Pacific Ocean form because:
F.as the sea floor spreads apart, sediments gather due to ocean currents.
G.the pressure of the water causes magma to rise to the surface.
H.the sea floor is spreading apart and magma is pushing to the surface.
J.the tectonic plates are pushed together, forming underwater mountains.
In pea plants, tall plants were crossed with short plants, and all of the offspring were tall. The tall parent plants most likely carries —
F.two recessive traits
G.two dominant traits
H.one trait for tallness and one trait for shortness
J.a mutated trait that prevents offspring from being short
What is the purpose of an air supply in an air track system?
A) To propel the air track sled.
B) To slow down the air track sled.
C) To life the air track sled to reduce friction.
D) To cool the metal surface of the air track sled.
Which of these is NOT a Noble Gas?
A) HE
B) NE
C) XE
D) BE
Which of the following is an advantage of recycling garbage over burying waste in landfills or incinerating trash?
A.Saves raw materials
B.Generates energy
C.Reduces volume by 90%
D.Lowers cost
A student presents a study of geology. Which of the following would be the BEST model to demonstrate the changes that occur when tectonic plates collide?
A.forcing two magnets together
B.breaking a piece of chalk in half
C.pushing two blocks of clay
D.dropping a marble into a box filled with sand
A variety of corn can produce yellow or white seeds. Yellow is dominant. White is recessive.
If an ear of corn contains only white corn, it must be —
A.homozygous recessive
B.heterozygous recessive
C.heterozygous dominant
D.homozygous dominant
Which of the following best describes why a new scientific hypothesis might be accepted or rejected?
F.popular support
G.moral beliefs
H.observational evidence
J.historical support
Which group is the least reactive on the periodic table?
What are Noble Gases.
The portion of the 70% of the earth’s water that is safe to drink.
0.5%
To which field of study did Newton's research involving laws of motion and gravity contribute the MOST scientific understanding?
Physics
In fruit flies, long wings are dominant over short wings. Which of the following must be true about the genetic material of a fruit fly with long wings?
It must be homozygous for long wings OR heterozygous for long wings.
From the Greek for icy cold it's the science of extremely cold temperatures
Cryogenics
Valence electrons are --
What are electrons in the atom's outermost shell?
In 2004, Americans recycled enough aluminum cans to build 13 of this type of transportation.
Aircraft Carriers.
A convergent boundary is formed when two tectonic plates meet and push against each other. What type of land form would occur at this type of boundary?
Folded mountain
In guinea pigs, the allele for a rough coat (R) is dominant over the allele for a smooth coat (r). A guinea pig with a rough coat is mated with a guinea pig with a smooth coat. Of the three offspring, 1 has a smooth coat. What is the probability that their next offspring will have a smooth coat?
50%
A billiard ball moving at .5 m/s strikes another identical ball, which is at rest, in an elastic head-on collision on a level table. What happens to the ball?
The moving ball stops and the other ball moves off at 0.5 m/s in the original direction of the moving ball.