1.
How long does it take for the Earth to rotate around completely on its axis?
Correct Answer
C. 24 Hours
Explanation
The correct answer is 24 Hours. This is because the Earth takes approximately 24 hours to complete one full rotation on its axis. This rotation is what causes day and night on Earth.
2.
Which of these might help keep erosion near a stream from happening?
Correct Answer
B. Planting A Tree
Explanation
Planting a tree near a stream can help prevent erosion because the tree's roots hold the soil in place, preventing it from being washed away by the water. The tree's canopy also provides shade, which helps to slow down the flow of water and reduce its erosive force. Additionally, the tree's leaves and branches can act as a natural barrier, breaking the impact of raindrops and preventing soil particles from being dislodged. Overall, planting a tree helps to stabilize the soil and protect the streambank from erosion.
3.
What is the natural process by which rocks break down into smaller chunks?
Correct Answer
B. Weathering
Explanation
Weathering is the natural process by which rocks break down into smaller chunks. It involves the physical, chemical, and biological processes that occur over time due to exposure to the elements such as wind, water, temperature changes, and living organisms. These processes cause the rocks to disintegrate and erode, leading to the formation of smaller particles and sediments. Weathering is a fundamental process in the formation of soil and the shaping of landscapes.
4.
What is the main cause of caves?
Correct Answer
A. Water Power
Explanation
Caves are primarily formed by the erosive action of water over a long period of time. Water seeps into cracks and crevices in rocks, dissolving the minerals and gradually enlarging the passages. Over time, the continuous flow of water erodes the rock, creating larger and deeper cavities. This process, known as karstification, is the main cause of cave formation.
5.
Which of these is a spiral storm that can be many miles wide?
Correct Answer
D. Hurricane
Explanation
A hurricane is a spiral storm that can be many miles wide. It is a large-scale weather system characterized by strong winds and heavy rainfall. Hurricanes typically form over warm ocean waters and can cause significant destruction when they make landfall. The spiral shape of a hurricane is due to the rotation of air around a central low-pressure area called the eye.
6.
What was the Great Plains of the U.S. called in the 1930's because of erosion?
Correct Answer
B. The Dust Bowl
Explanation
In the 1930s, the Great Plains of the U.S. were referred to as the Dust Bowl due to severe erosion. This term was used to describe the devastating environmental conditions caused by a combination of drought, poor farming practices, and strong winds. The excessive plowing and removal of natural grasses left the soil exposed, leading to dust storms that engulfed the region. The Dust Bowl had significant economic and social impacts, causing widespread poverty, displacement, and agricultural decline.
7.
Which of the following is a renewable resource?
Correct Answer
D. Soil
Explanation
Soil is considered a renewable resource because it can be replenished over time through natural processes such as weathering and decomposition. It is formed by the breakdown of rocks and organic matter, and can be replenished through the addition of nutrients and organic material. Soil is essential for plant growth and agriculture, making it a valuable resource that can be managed and conserved to ensure its sustainability for future generations.
8.
Which of these terms means "protecting and using a resource wisely"?
Correct Answer
D. Conservation
Explanation
Conservation means protecting and using a resource wisely. It involves the careful management and preservation of natural resources to ensure their sustainability for future generations. This term emphasizes the need to balance human needs with environmental concerns and promotes practices that minimize waste, reduce pollution, and promote sustainable development.
9.
What is a diamond an example of?
Correct Answer
B. Nonrenewable Resource
Explanation
A diamond is an example of a nonrenewable resource because it is formed deep within the Earth's crust over millions of years under intense heat and pressure. Once a diamond is mined and extracted, it cannot be replaced or regenerated within a human lifespan. Therefore, diamonds are considered finite resources that cannot be easily replenished, making them nonrenewable.
10.
Which of the following is a nonrenewable resource?
Correct Answer
C. Natural Gas
Explanation
Natural gas is a nonrenewable resource because it is formed from the remains of ancient plants and animals that were buried and subjected to intense heat and pressure over millions of years. Once these reserves are depleted, they cannot be replenished within a human lifetime. In contrast, air, water, and the sun are considered renewable resources as they are naturally replenished by the Earth's processes and can be used indefinitely.
11.
Which of these is a way to curb human pollution?
Correct Answer
B. Alternative Fuel
Explanation
Alternative fuel is a way to curb human pollution because it reduces the dependence on fossil fuels, which are major contributors to air pollution and greenhouse gas emissions. Alternative fuels, such as biofuels, electric power, or hydrogen, produce fewer harmful emissions when used in vehicles or power generation. By promoting the use of alternative fuels, we can reduce pollution and mitigate the negative impacts of human activities on the environment.
12.
What substance, added to fog, makes smog?
Correct Answer
D. Smoke
Explanation
Smoke is the correct answer because when smoke is added to fog, it forms smog. Smog is a type of air pollution that occurs when smoke, industrial emissions, and other pollutants mix with fog. This combination creates a thick and hazy atmosphere that is harmful to human health and the environment. The presence of smoke particles in fog contributes to the formation of smog and increases its density and toxicity.
13.
Which of these bodies of water would it be easiest to float and swim in?
Correct Answer
D. Ocean
Explanation
The ocean would be the easiest body of water to float and swim in because of its large size and saltwater composition. The vastness of the ocean provides ample space for floating and swimming without any obstacles or boundaries. Additionally, the saltwater in the ocean offers greater buoyancy compared to freshwater bodies like lakes and ponds, making it easier to float and stay afloat. The swimming pool may have controlled conditions, but its smaller size and lack of natural buoyancy make it less suitable for floating and swimming compared to the ocean.
14.
What does your body use to get rid of salt?
Correct Answer
C. Water
Explanation
The body uses water to get rid of salt. Water helps in the process of excretion, where excess salt is removed from the body through urine. Additionally, water also aids in maintaining the electrolyte balance in the body by diluting and flushing out excess salt through sweat.
15.
Where does most evaporation of water occur?
Correct Answer
A. Oceans
Explanation
Most evaporation of water occurs in oceans because oceans cover about 71% of the Earth's surface. The large surface area of the oceans allows for more water to be exposed to the sun's heat, leading to higher rates of evaporation. Additionally, the oceans have a constant supply of water, making them a significant source of evaporation. Ponds, lakes, and rivers also experience evaporation, but their surface area is much smaller compared to oceans, resulting in less evaporation.