Reviewer in Midterms Examination - Earth Science

Why is the earth’s distance from the sun suitable for life forms to exist?

• It maintains the temperature of the earth.

• It gives the earth much needed heat and light.

• It provides the earth with available water for organisms.

• It supplies the earth with enough gases in the atmosphere.

How does diversity of life become an important factor in our existence?

• It makes the populations grow without limits.

• It enables organisms to reproduce its own kind.

• It makes ecosystems thrive with the population of producers.

• It makes ecosystems productive with the roles that each species plays.

Earth is considered a habitable planet because it is situated in what we refer to as the "habitable zone" within the solar system. What do you think would happen if Earth were located farther than this habitable zone?

• The Earth will become a ball of fire.

• The Earth will become an ice-coated rock.

• Fewer organisms will thrive due to the rise in Earth's temperature.

• More organisms will thrive due to the decrease in Earth's temperature.

How is biosphere affected by all other Earth’s subsystem?

• Air and water help in the formation of rocks to sustain life on Earth.

• Hydrosphere takes the most significant part in the emergence of life on Earth.

• Survival and existence of life in the biosphere depend on the three earth subsystems.

• Plants and animals in the biosphere need to survive by giving nutrients to the lithosphere

Human action greatly affects the Earth itself. Which of the following is an example of a human impact of the biosphere?

• Air pollution

• Littering

• Littering, air pollution, and water pollution

• Water pollution

Which statement is TRUE regarding earth’s thermosphere?

• It is where most of weather disturbances occur.

• It protects the Earth from the impact of space debris.

• It is considered as the outermost layer of the atmosphere.

• It has charged particles that greatly affects earth’s magnetic field.

What makes stainless steel a better choice for utensils than pure iron?

• It has a higher melting point.

• It is more lightweight than iron.

• It is more flexible and easier to mold.

• The addition of chromium prevents rusting and increases durability.

Daniel, a 40-year-old factory worker, recently discovered that zinc is a vital mineral for maintaining a healthy body. Motivated by this knowledge, he decided to start taking zinc supplements. In what ways does zinc contribute to Daniel's overall health?

• It keeps the skin healthy and radiant.

• It regulates cell division and tissue repair in wounds.

• It is essential for the immune system to properly work.

• It is important in building tissue for growth and development.

Which material would you recommend for high-temperature electrical insulation, and why?

• Silicon, because it is widely used in chips.

• Gold, because it is malleable and conducts electricity well.

• Quartz, because it is transparent and used in computer screens.

• Muscovite mica, because it has a high melting point and is a poor conductor.

What would happen to the Earth if it does not have a moon?

• The Earth will revolve the Sun slower.

• The aerial organisms would be lack of guide during night.

• The Earth will rotate on its axis faster and no tides will be created during night.

• More organisms would have an increased opportunity to thrive because there would be no night.