Exploring Air and Water

What is the main gas found in the air we breathe?

• Hydrogen

• Carbon Dioxide

• Nitrogen

• Oxygen

What process do plants use to make their own food using sunlight and carbon dioxide?

• Fermentation

• Transpiration

• Respiration

• Photosynthesis

What is the water cycle?

• The water cycle is the process of water circulating between the Earth's surface and the atmosphere.

• The water cycle is the process of water being stored in underground reservoirs.

• The water cycle is a method of purifying water through filtration.

• The water cycle refers to the movement of water only within oceans.

Name one way that air pollution can affect our health.

• It can boost immune system function.

• It can cause respiratory problems.

• It can improve air quality.

• It can enhance lung capacity.

What is the term for water that is safe to drink?

• Potable water

• Distilled water

• Saltwater

• Contaminated water

What are clouds made of?

• Clouds are made of dust particles.

• Clouds consist of solid rock formations.

• Clouds are made of water droplets or ice crystals.

• Clouds are composed of gases like oxygen and nitrogen.

How does air pressure change with altitude?

• Air pressure fluctuates randomly with altitude changes.

• Air pressure increases with increasing altitude.

• Air pressure decreases with increasing altitude.

• Air pressure remains constant regardless of altitude.

What is the importance of clean water for living organisms?

• Clean water is vital for hydration, nutrient transport, waste removal, and metabolic processes in living organisms.

• Clean water has no effect on metabolic processes.

• Clean water is only necessary for aquatic animals.

• Clean water is primarily used for recreational activities.

What is evaporation in the context of the water cycle?

• Evaporation is the process of water freezing into ice.

• Evaporation is the process of water turning from liquid to vapor, contributing to the water cycle.

• Evaporation is the movement of water from the ground to the ocean.

• Evaporation is the process of vapor turning back into liquid water.

What is the difference between saltwater and freshwater?

• Freshwater contains more minerals than saltwater.

• Saltwater has a high salt concentration, while freshwater has a low salt concentration.

• Saltwater is always warmer than freshwater.

• Saltwater is found only in lakes and rivers.