Test on Atmosphere, Cycles, and Environmental Impact

Question 1: Photosynthesis is the sole process that removes carbon dioxide from the atmosphere, according to the provided study materials.

A. Ano

B. Ne

Explanation: The study materials state that photosynthesis removes carbon, along with it dissolving in the oceans. Therefore, photosynthesis is not the only process described for carbon removal.

Question 2: Based on the provided study materials, which statements accurately describe the roles of respiration and combustion in the atmosphere?

A. Respiration is a chemical reaction that releases energy by combining glucose with oxygen.

B. Combustion is a chemical reaction where a fuel is burned in oxygen to release energy.

C. Both respiration and combustion add carbon dioxide to the atmosphere.

D. Photosynthesis is the primary process that adds carbon dioxide to the atmosphere, unlike respiration and combustion.

Explanation: The study materials define respiration as 'A chemical reaction in the cells of living things that combines glucose with oxygen to release energy', making option 0 correct. Combustion is defined as 'A chemical reaction when a fuel is burned in oxygen to release energy', making option 1 correct. The section on the Carbon Cycle explicitly states, 'Respiration and combustion (of fossil fuels) add carbon dioxide to the atmosphere', confirming option 2 is correct. Option 3 is incorrect because the materials state that photosynthesis removes carbon dioxide, not adds it, and that respiration and combustion add carbon dioxide.

Question 3: The formation of new igneous rocks involves the processing of collected used materials to be used again.

A. Ano

B. Ne

Explanation: Igneous rocks are formed from the cooling of molten rock. The processing of collected used materials for reuse is part of recycling, not igneous rock formation.

Question 4: Sedimentary rocks are formed by small rock pieces being transported in rivers and laid down in layers.

A. Ano

B. Ne

Explanation: Sedimentary rocks are described as being formed by small rock pieces being transported in rivers and laid down in layers.

Question 5: Based on the provided study materials, how are metamorphic rocks formed?

A. From the cooling of molten rock.

B. By small rock pieces being transported in rivers and laid down in layers.

C. From another rock under heat and pressure.

D. Through the collection and processing of used materials.

Explanation: According to the study materials, metamorphic rocks are formed from another rock under heat and pressure.