# A Quiz On Earth Science! MCQ Trivia

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If there is one way that you can successfully revise for a subject, it is using quizzes. I have prepared a series of tests that are designed to help you with passing the earth science exam. Why don’t you take up the test mentioned below and see if you have what it takes to ace the upcoming exam? All the best!

• 1.

### What mineral has the chemical formula PbS?

• A.

Graphite

• B.

• C.

Galena

• D.

Malachite

C. Galena
Explanation
Galena is the correct answer because it has the chemical formula PbS. Galena is a mineral composed of lead and sulfur, with lead being represented by the chemical symbol Pb and sulfur by the symbol S. Graphite is a form of carbon, not lead and sulfur. Lead is an element, not a mineral. Malachite is a mineral, but its chemical formula is Cu2CO3(OH)2, not PbS.

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• 2.

### How much of an iceberg appears above the water line?

• A.

1/4th

• B.

1/9th

• C.

1/100th

• D.

2-Jan

B. 1/9th
Explanation
Approximately 1/9th of an iceberg appears above the water line. This is because ice is less dense than water, causing a large portion of the iceberg to remain submerged. The visible portion above the water is often just a small fraction of the entire iceberg's size.

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• 3.

### How much salt is in every gallon of seawater?

• A.

32 Pounds Of Salt

• B.

1/18 Pound Of Salt

• C.

1/4 Pound Of Salt

• D.

1 Pound Of Salt

C. 1/4 Pound Of Salt
Explanation
Seawater contains approximately 1/4 pound of salt per gallon. This is an average estimate, as the salt concentration in seawater can vary depending on factors such as location and temperature. However, on average, seawater is composed of about 3.5% salt, which translates to roughly 1/4 pound of salt per gallon.

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• 4.

### The average rain drop falls at a rate of how many feet per second?

• A.

125

• B.

3

• C.

60

• D.

21

D. 21
Explanation
The average raindrop falls at a rate of 21 feet per second.

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• 5.

### How many miles long is an average bolt of lightning?

• A.

10

• B.

1

• C.

6

• D.

2

C. 6
Explanation
The average bolt of lightning is approximately 6 miles long. Lightning bolts can vary in length, but on average, they span about 6 miles from the cloud to the ground. This distance can be influenced by various factors such as the strength of the storm and the atmospheric conditions. Lightning is a powerful natural phenomenon that occurs during thunderstorms when there is a buildup of electrical energy in the atmosphere.

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• 6.

### How often is the earth hit by lightning?

• A.

100 Times An Hour

• B.

1 Time A Second

• C.

100 Times A Second

• D.

30 Times A Minute

C. 100 Times A Second
Explanation
The correct answer is 100 Times A Second. This means that lightning strikes occur on Earth at a rate of 100 times per second. Lightning is a natural electrical discharge that happens during thunderstorms when there is a buildup of electric charge in the atmosphere. These frequent lightning strikes are a result of the intense electrical activity that occurs during storms, making Earth a lightning-prone planet.

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• 7.

### What produces more energy than all the world's nuclear weapons combined?

• A.

Lightning

• B.

• C.

Earthquake

• D.

Hurricane

D. Hurricane
Explanation
Hurricanes produce more energy than all the world's nuclear weapons combined. Hurricanes are powerful tropical storms that form over warm ocean waters. They release a tremendous amount of energy through the condensation of water vapor and the release of latent heat. This energy is much greater than the energy released by nuclear weapons, making hurricanes a natural phenomenon capable of unleashing immense power.

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• 8.

### What family are both poison oak and poison ivy part of?

• A.

Poison

• B.

Botanical

• C.

Oak

• D.

Cashew

D. Cashew
Explanation
Both poison oak and poison ivy are part of the Cashew family. This is because they both belong to the Anacardiaceae family, which is commonly known as the Cashew family. This family includes various plants, including poison oak, poison ivy, and cashew trees. These plants are known for containing a toxic resin called urushiol, which can cause allergic reactions in humans upon contact. Therefore, poison oak and poison ivy are part of the Cashew family.

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• 9.

### How many times does lightning strike the Earth every second?

• A.

700 Times

• B.

2,000 Times

• C.

100 Times

• D.

30 Times

C. 100 Times
Explanation
Lightning is a natural electrical discharge that occurs during thunderstorms. It is estimated that lightning strikes the Earth around 100 times every second. This high frequency is due to the large number of thunderstorms that occur globally on a daily basis. Lightning is caused by the buildup and discharge of electrical energy in the atmosphere, and it can be dangerous and destructive. Understanding the frequency of lightning strikes helps in assessing the risk associated with thunderstorms and implementing safety measures.

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• 10.

### What is the test that can help determine the hardness of a rock called?

• A.

Scratch Test

• B.

Malleability Test

• C.

Streak Test

• D.

Density Test

A. Scratch Test
Explanation
The scratch test is used to determine the hardness of a rock. By scratching the rock with a mineral of known hardness, such as a fingernail or a specific mineral on the Mohs scale, the tester can determine the relative hardness of the rock. If the rock is easily scratched, it has a lower hardness, while if it is difficult to scratch, it has a higher hardness. This test is commonly used in geology to classify and identify different types of rocks based on their hardness properties.

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• 11.

### Which of the following lakes has a higher salt content than normal?

• A.

Albert Lake

• B.

Lake Erie

• C.

Lake Superior

• D.

Lake Michigan

A. Albert Lake
Explanation
Albert Lake has a higher salt content than normal.

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• 12.

### What are large volcanoes that rise from the sea floor called?

• A.

Water Spouts

• B.

Lava Tubes

• C.

Dormant

• D.

Seamounts

D. Seamounts
Explanation
Seamounts are large volcanoes that rise from the sea floor. They are formed by volcanic activity and are usually found in the ocean. These underwater mountains do not reach the surface of the water and are often characterized by their conical shape. Seamounts can vary in size and can have a significant impact on the oceanic environment, providing habitats for various marine species.

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• 13.

### What submersible helped to discover the wreckage of the Titanic in 1986?

• A.

Alvin

• B.

Atlantis

• C.

Columbus

• D.

Titania

A. Alvin
Explanation
Alvin is the correct answer because it is a submersible that was used to discover the wreckage of the Titanic in 1986. Alvin is a deep-sea submersible that is designed for manned exploration of the ocean floor. It played a crucial role in the exploration and discovery of the Titanic wreckage, providing valuable insights into the condition and layout of the ship.

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• 14.

### What fuel comes from the remains of 300-million-year-old decayed fern plants?

• A.

Coal

• B.

Natural Gas

• C.

Oil

• D.

Gasoline

A. Coal
Explanation
Coal is formed from the remains of 300-million-year-old decayed fern plants. Over time, these plants were buried and subjected to heat and pressure, causing them to undergo a process called carbonization. This process gradually transformed the plant material into coal. Therefore, coal is the fuel that comes from the remains of these ancient fern plants.

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• 15.

### What's the name for the weight of air pushing down on Earth's surface?

• A.

Humidity

• B.

Barometer

• C.

Gravity

• D.

Air Pressure

D. Air Pressure
Explanation
Air pressure refers to the weight of the air pushing down on Earth's surface. It is caused by the force of gravity pulling the air molecules towards the Earth. Air pressure is an important factor in weather patterns and can vary at different altitudes and locations.

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