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Instructions: Answer all questions to get your test result.
1) Which is the best example of a pure substance?
A
gold
B
peanuts
C
milk
D
air
2) Which statement best explains how periods on the periodic table are organized?
A
increasing number of neutrons from left to right
B
decreasing number of electrons from left to right
C
increasing atomic number from left to right
D
decreasing atomic number from left to right
3) An ice cube is put into a heated pan. What will most likely happen to the molecules in the ice as the ice is heated?
A
the molecules will begin to condense in the air
B
the molecules will begin to move slower
C
the molecules will begin to move faster
D
the molecules will begin to increase in density
4) Which best explains why the total mass of the product would be less than the total weight of the reactant after a chemical reaction?
A
precipitates were created in the new solution
B
gases were released to the atmosphere
C
a physical change occurred
D
atoms involved in the reaction lost mass
5) Which would least likely have an impact on global climate change?
A
producing energy using oil
B
producing energy using hydroelectric plants
C
producing energy using coal
D
producing energy using natural gas
6) Which is an example of a renewable energy resource?
A
oil
B
gas
C
coal
D
biomass
7) Which will most likely result if there is increased upwelling in a coastal area/
A
less nutrients in the water
B
fewer nitrates
C
more aquatic life
D
high water temperatures
8) Which best determines the health of a lake used as a source of freshwater
A
its temperature and depth
B
it temperature and pH
C
its depth and width
D
its location and depth
9) A scientist finds the bones of a dinosaur. What could help the scientist determine the approximate age of the dinosaur bones?
A
the weather conditions in the area of the bones
B
the birds living in the area of the bones
C
the index fossils in the area of the bones
D
the kinds of trees living in the area of the bones
10) Which best describes how ice cores are important to the study of geological history?
A
they hold index fossils, which are used to date the different ice cores
B
they follow the Law of Superposition, which gives reasons for extinctions of species
C
They show unconformities which signal changes in deposition
D
they contain evidence showing changes in the atmospheric compositions over time
*select an answer for all questions
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