Exploring Air, Soil, and Machines

Why is air important for us?

• Air is important because it provides oxygen for breathing and supports life on Earth.

• Air is essential for generating electricity.

• Air is important for making clouds and rain.

• Air is primarily used for cooking food.

What do plants need from air?

• Oxygen

• Nitrogen

• Hydrogen

• Carbon dioxide

Can you name a type of soil?

• Loam

• Clay

• Silt

• Sand

What color is sandy soil?

• Green

• Tan or light brown

• Blue

• Red

What color is clay soil?

• Reddish-brown, gray, or yellowish

• White

• Greenish-blue

• Black

What do we call the air we breathe?

• smog

• oxygen

• carbon dioxide

• air

What happens if there is no air?

• Air is essential for water to exist.

• Life cannot be sustained, sound cannot travel, and combustion cannot occur.

• Without air, plants can still photosynthesize.

• Sound travels faster in a vacuum than in air.

What is one effect of air pollution?

• Increased plant growth and photosynthesis.

• Enhanced visibility and clarity in the atmosphere.

• Respiratory problems in humans.

• Improved air quality in cities.

How can we help keep the air clean?

• Increase plastic production

• Use more pesticides

• Reduce emissions, conserve energy, plant trees, and support clean energy.

• Burn more fossil fuels

What color do you see in a clear sky?

• yellow

• blue

• green

• red