8th Grade Science EOG Review Part I: Question Preview (ID: 14023)


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Which is an example of a renewable energy resource?
a) biomass b) coal c) gas d) oil
Which will most likely result if there is increased upwelling in a coastal area?
a) more aquatic life b) less nutrients in the water c) higher water temperatures d) fewer nitrates
Which would least likely have an impact on global climate changes?
a) producing energy using hydroelectric plants b) producing energy using coal c) producing energy using oil d) producing energy using natural gas
Which best explains why the total mass of the product(s) would be less than the total weight of the reactant(s) after a chemical reaction?
a) a physical change occurred b) atoms involved in the reaction lost mass c) precipitates were created in the new solution d) gases were released into the atmosphere
What happens to the molecules of an ice cube that is placed in a heated pan?
a) The molecules will begin to move slower b) The molecules will begin to move faster c) The molecules will begin to increase in density d) the molecules will begin to condense into the air
Which statement best explains how periods on the periodic table are organized?
a) increasing atomic number from left to right b) increasing number of neutrons from left to right c) decreasing number of electrons from left to right d) decreasing atomic mass number from left to right
Which is the best example of a pure substance?
a) peanuts b) milk c) gold d) air
Which best determines the health of a lake used as a source of freshwater?
a) its depth and width b) its temperature and pH c) its location and depth d) its temperature and depth
What could help a scientists determine the approximate age of newly discovered dinosaur bones?
a) the birds living in the area of the bones b) the weather conditions in the area of the bones c) the kinds of trees living in the area of the bones d) the index fossils living in the area of the bones
Which best describes how ice cores are important to the study of geologic history?
a) They show unconformities, which signal changes in deposition b) They hold index fossils which are used to date the different ice cores c) They contain evidence showing changes in the atmospheric composition over time d) They follow the law of superposition, which gives reasons for extinctions of species
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