Matter:
Properties and Change
Hydrosphere
Structures and Functions of Living Organisms
Chemistry
Random
100

Is classified as an element

A carbon dioxide 

B iron

C vinegar 

D water

What is Iron?

100

Allows scientists to investigate what Earth’s climate was like over the past 740,000 years

 A volcanic deposits 

B fossils 

C faults 

D ice cores

Ice cores

100

Where do plants get the food they need for energy? 

A They absorb it directly from the sun. 

B They absorb it directly from the soil. 

C They produce it during photosynthesis.

D They receive it from atmospheric gases.

They produce it during photosynthesis.

100

Which is the best example of a chemical change?

 A butter melting 

B egg cooking 

C paper tearing 

D water evaporating

What is an egg cooking?

100

Which best explains why mammals became dominant after the mass extinction of the dinosaurs?

 A They had traits that helped them adapt to environmental changes.

B They were larger than dinosaurs and ate different foods. 

C They lived in different areas on Earth than dinosaurs. D They were able to hibernate for thousands of years.

They had traits that helped them adapt to environmental changes.

200

Describes the sequence of the elements in Period 5 of the periodic table

 A highly reactive gases, relatively nonreactive metals, metalloids, very nonreactive gases, nonreactive nonmetals 

B highly reactive metals, relatively nonreactive metals, metalloids, reactive nonmetals, nonreactive gases

C nonreactive gases, metalloids, nonreactive metals, highly reactive metals, highly reactive gases 

D nonreactive gases, nonreactive metals, highly reactive metals, metalloids, reactive nonmetals, reactive gases

B highly reactive metals, relatively nonreactive metals, metalloids, reactive nonmetals, nonreactive gases

200

Which is the most accurate way of determining the age of a fossil? 

A radioactive dating 

B relative dating 

C dating index fossils 

D dating the rock layers above the fossil

What is radioactive dating?
200

How are mutualism and parasitism different? 

A Both organisms benefit in mutualism, while in parasitism only one organism benefits at the other’s expense.

 B Both organisms benefit in parasitism, while in mutualism only one organism benefits at the other’s expense. 

C Both organisms benefit in mutualism, while in parasitism one organism benefits, and the other is neither harmed nor benefits. 

D Both organisms benefit in parasitism, while in mutualism one organism benefits, and the other is neither harmed nor benefits.

A- Both organisms benefit in mutualism, while in parasitism only one organism benefits at the other’s expense.

200

Which are most responsible for creating acid rain pollution? 

A nuclear power plants 

B coal-burning power plants

C hydroelectric power plants 

D wood-burning power plants

B coal-burning power plants

200

Which best describes a method of obtaining energy that may cause changes in water temperature and harm to fish populations? 

A burning coal 

B using ethanol in cars 

C installing solar panels on a home 

D generating electricity in a hydroelectric power plant

Burning Coal

300

The most likely major concern associated with burning fossil fuels is

 A Burning fossil fuels can pollute the oceans. 

B Burning fossil fuels can remove harmful chemicals from precipitation. 

C Burning fossil fuels can remove carbon dioxide from the atmosphere. 

D Burning fossil fuels can produce smog, which can cause respiratory illnesses.

Burning fossil fuels can produce smog, which can cause respiratory illnesses.

300

Supports the theory that some mountains were once at the bottom of an ocean? 

A There are underwater mountains on the ocean floor today. 

B Freshwater rivers flow to the ocean. 

C Fossils of marine organisms are found on the tops of some mountains.

D Both mountains and ocean floors have similar minerals in their rocks.

Fossils of marine organisms are found on the tops of some mountains.

300

Which demonstrates how genetic variation may result from a change in the environment where an animal lives? 

A A salmon swims faster as it enters colder waters. 

B A snake increases its body temperature because it moves on top of a rock in direct sunlight. 

C A beetle stands out to predators because it moves among plants that have colors different than its own. 

D An arctic fox changes its color over time because it migrates to an area with a different climate.

D An arctic fox changes its color over time because it migrates to an area with a different climate.

300

Which is the primary source of energy for most cells in the body? 

A sugar 

B fat 

C protein

 D vitamin

Sugar

300

How would a large increase in the salinity of an estuary most likely affect the ecosystem of the estuary?

A All organisms would die. 

B All organisms would continue to live as they now do. C The number of salt-tolerant organisms would increase, and the number of salt-intolerant organisms would decrease.

D The number of salt-intolerant organisms would increase, and the number of salt-tolerant organisms would decrease.

The number of salt-tolerant organisms would increase, and the number of salt-intolerant organisms would decrease.

400

Two different liquids are poured together in an open container. Bubbles begin to form. After the bubbling stops, it is determined that the total weight of the two liquids is less than before they were poured together. 

 A Some of the atoms during the reaction escaped into the air.

 B Some of the atoms during the reaction were destroyed. 

C Some of the atoms during the reaction became heavier. 

D Some of the atoms during the reaction changed to a different kind of atom.

Some of the atoms during the reaction escaped into the air.

400

Upwellings can improve fishing for ocean fishermen? 

A They cause the ocean water to get warmer.

 B They cause ocean currents to remain calm. 

C They bring nutrients from the cold, deep ocean waters.

D They bring ocean currents from the equator.

They bring nutrients from the cold, deep ocean waters.

400

Which of these would most likely happen to a species that is not able to adapt to a changing environment? 

A The species would become extinct over time.

B The species would develop mutated cells. 

C The species would develop resistance to disease. 

D The species would change the environment.

The species would become extinct over time.

400

What would have the greatest long-term impact on reducing the amount of carbon dioxide in the air?

 A planting trees around a farm

B cutting down trees around a farm

 C increasing the number of livestock on a farm 

D decreasing the number of livestock on a farm

planting trees around a farm

400

Which is the best reason for scientists to study ice cores obtained from Earth’s ice caps? 

A to evaluate potential oil drilling sites 

B to study the quality of water stored in glaciers 

C to determine the rate of melting in polar regions 

D to study past climates by analyzing trapped gases and particles

to study past climates by analyzing trapped gases and particles

500

Chlorine has 7 valence electrons. With what group/family of elements will chlorine most likely bond with?

Group 1 (alkali metals) or other elements that can donate an electron to chlorine, allowing it to achieve a stable octet configuration.

500

If a lake has excess levels of phosphates and nitrates in its water, what will most likely result? 

A The temperature of the lake water will decrease. 

B The turbidity levels of the lake will decrease. 

C The dissolved-oxygen levels in the lake will increase. D The growth of algae in the lake will increase.

The growth of algae in the lake will increase.

500

What happens to most of the energy as it moves throughout a food web?

 A It is changed into light energy. 

B It is changed into heat energy. 

C It is changed into mass.

 D It is changed into decomposers.

B- It is changed into heat energy.

500

Which statement is true about a chemical reaction? 

A The physical states of the atoms in the reactants determine the products.

 B Some of the atoms in the reactants will be a part of the products. 

C The number of atoms in the reactants determines the products. 

D All of the atoms in the reactants will be a part of the products.

D- All of the atoms in the reactants will be a part of the products.

500

What is the most likely result of overusing a particular antibiotic?

 A fewer infections caused by bacteria resistant to the antibiotic 

B more infections caused by bacteria resistant to the antibiotic

C fewer infections caused by viruses and bacteria 

D more infections caused by viruses 32 Which illness could most likely be treated with antibiotics? A influenza B common cold C strep throat D diabetes RELE

B-more infections caused by bacteria resistant to the antibiotic