EOG Day One

Which is the best example of a pure substance?

• peanuts
• milk
• gold
• air

Which best explains how periods on the table are organized?

• increasing atomic number from left to right
• increasing number of neutrons, left to right
• decreasing number of electrons, left to right
• decreasing atomic mass from left to right

An ice cube is put into a heated pan. What will happen to the molecules

• they will begin to move slower
• they will begin to move faster
• they will increase in density
• they will condense in the air

Which best explains why the total mass of a product would be less than the reactants after a CHEMICAL CHANGE?

• a  physical change has occurred
• atoms involved have lost mass
• precipitates were created in the new solution
• gases were released into the atmosphere

Which would least likely have an impact on global climate changes?

• producing energy using hydroelectric plants
• producing energy using coal
• producing energy using oil
• producing energy using natural gas

Which one is a renewable energy source?

• biomass
• coal
• gas
• oil

Which will most likely result if there is upwelling in a coastal area?

• more aquatic life
• less nutrients in the water
• higher water temperatures
• fewer nitrates

Which best determines the health of a lake used as a source of freshwater?

• depth and width
• temperature and pH
• location and depth
• temperature and depth

A scientist found the bones of a dinosaur. What could help him determine the approximate age?

• birds living in the area
• weather conditions in the area of the bones
• the kinds of trees living near the bones
• the index fossils in the area near the bones

Why are ice cores important to the study of geologic history?

• they show uncomformities, which signal deposition changes
• they hold index fossils, which date different ice cores
• they contain evidence showing atmospheric changes over time
• they follow the Law of Superposition, which gives extinction reasons