Sample EOG Questions – Set 2
21. What happens to water molecules during the boiling process?
A They move faster and move farther apart as they absorb heat.
B They move faster and remain close together as they absorb heat.
C They move more slowly but move farther apart as they lose heat.
D They move faster and move farther apart as they lose heat.
22. Which pair of elements has the most similar properties?
A Li and B
B I and Ca
C K and He
D N and P
23. If a chemical reaction such as photosynthesis begins with 6 atoms of carbon (C), how many atoms of
carbon (C) should be in the products?
A 12 atoms of carbon (C)
B 6 atoms of carbon (C)
C 3 atoms of carbon (C)
D 2 atoms of carbon (C)
24. Which is a possible disadvantage of using flowing water to produce electricity?
A ecosystem damage and loss of land
B reduced carbon dioxide emission
C only suitable for industrial use
D creates reservoirs
25. Which type of renewable energy is best fits the following description: Energy generated by large
turbines, a clean source of energy, but not suitable for all locations due to weather conditions and the
large amount of land needed to implement it properly.
A nuclear energy
B geothermal energy
C wind energy
D coal energy
26. Why is water from an aquifer more likely to be cleaner than water from other sources?
A because it forms where fresh and salt water meet
B because it receives water directly from precipitation
C because it rises to the surface near the ocean
D because pollutants are filtered by rock and soil deep within Earth
27. In which oceanic zone do clams and crabs survive by burrowing in the sand?
A oceanic
B intertidal
C deep ocean
D open ocean
28. If a body of water has high turbidity levels, what can most likely be concluded?
A It has a low pH.
B It is unsafe to drink.
C It is too hot to drink.
D It contains a lot of chemicals.
29. Scientists find dinosaur fossils in the bottom rock layers of a cliff and mammal fossils in the middle
rock layer of the cliff. Which could best be concluded from this evidence?
A Dinosaurs ate plants.
B Dinosaurs were eaten by the mammals.
C Dinosaurs lived on Earth before the mammals.
D Dinosaurs and mammals lived at the same time.
30. The diagram below shows the relative age of each of the fossils based on the layer of soil they are
found in. Which of the fossils is the youngest?
A The fish skeleton
B The shell
C The fern frond
D The leaves from a hardwood tree
31. Ten people became sick with the flu after attending a school dance. What is the scenario that could
best explain how the people got sick?
A contact with environmental sources
B contact with an infected animal
C contact with a contaminated object
D contact with an infected person
32. Which is the best way to help prevent the flu from becoming a pandemic?
A getting a vaccination
B taking antibiotics
C eating fruits and vegetables
D washing hands often
33. Which best explains the importance of nitrogen in the cycling of energy and matter?
A Nitrogen increases protein production in plants.
B Nitrogen decreases protein production in plants.
C Nitrogen decreases the effectiveness of photosynthesis.
D Nitrogen increases the effectiveness of photosynthesis.
34. Which is a way the agricultural biotechnology industry could have a positive impact on the
environment?
A by producing crops that are virus resistant
B by making robots to replace large farm machines
C by reducing the need for countries to import food
D by increasing the use of wind farms that produce electricity
35. If wolves prey on deer for food, what will most likely happen to the deer population if wolves are
removed from an area where deer live?
A The population of deer will increase.
B The population of deer will decrease.
C The population of deer will remain the same.
D The population of deer will become extinct.
36. Where do plants get most of the energy they need to live and grow?
A water
B soil
C air
D sunlight
37. Scientists think that dolphins and whales may have evolved from a common ancestor. What evidence
supports this hypothesis?
A They swim the same way.
B They eat the same food.
C They live in the same area of the ocean.
D They have similar anatomies.
38. In the winter, the fur of the arctic fox is white. In summer, the fur darkens to a reddish brown. What
most likely causes the fur of the fox to change color?
A the amount of sunlight present
B the fox’s habitat
C the fox’s genes
D the fox’s age
39. Which would best allow a species to survive environmental changes?
A similar physical features
B low mutation rate
C small population
D genetic diversity
40. How would smoking tobacco most likely have a negative impact on the ability of an individual to
succeed at physical activities?
A It interferes with balance and coordination.
B It decreases the ability to make decisions rapidly.
C It decreases stamina and cardiovascular efficiency.
D It decreases the speed and power of muscle contractions.