Environment Review

Which of these is the largest planet in the Solar System?

• Earth
• Mars
• Mercury
• Jupiter
• Pluto

Answer explanation

Jupiter is a gas giant made primarily of hydrogen and helium. Unlike terrestrial planets that have solid surfaces, gas giants like Jupiter don't have a well-defined solid surface, allowing them to accumulate more mass in a gaseous form. This composition has allowed Jupiter to grow significantly larger than planets with solid surfaces.

Many communities in arid (dry) regions are trying to use less water, since water is scarce. Which of these plans would save water use?

• Grow desert plants in their yards instead of grass
• Ask people to not wash their cars as often
• Collect rain in large containers so it can be used later
• Pave all the yards with concrete so there is no need to water them

Which of these things that people do does NOT increase air pollution?

• burn logs in their fireplaces
• drive their cars as often as possible
• use toxic chemical cleaners
• use public transportation as much as possible

On some farmlands, farmers pour large amounts of water on their fields to grow plants. Which of these would use less water, but would still grow plants?

• Don’t water the plants at all
• Place watering tubes right next to the plants, instead of pouring water everywhere
• Only grow plants that do not need water
• Flood the fields with salt water

Frogs eat crickets and snakes eat frogs. Cricket populations increase in cool, wet weather. What will happen then in this cool, wet swamp?

• Frogs will die of hunger
• Frog and snake populations will both increase
• Snakes will die of hunger.
• Both snake and frog populations will stay the same

Ms. Sadler owns a restaurant. She wants to make changes at the restaurant that will help the environment. Which of these will help the most?

• Print the restaurant menus on recycled paper
• Use plastic tablecloths instead of cloth
• Put full page advertisements in the local newspaper
• Use extra hot water to wash the dirty dishes

What would NOT be a result of having fewer trees in an area?

• There would be more air pollution
• There would be less shade in the area
• The temperature in the area would become warmer
• The animals in the area would breathe more easily

Mayor Jane's town floods after rainstorms. Which plan is best to stop the flooding

• set up a loud speaker that will warn people about the rainstorm
• plant trees because the roots help the soil soak up rainwater
• build large tents over the downtown
• lay concrete over all grassy areas

Roads and buildings can absorb more heat from the Sun than grass and trees can absorb, making cities hotter. How can cities help to solve this problem?

• by planting more trees
• by increasing traffic
• by building taller buildings
• by paving over all grassy areas

As the climate gets warmer, farmers could plant crops that grow well in higher temperatures. What would happen as a result?

• They should wait until the climate gets cooler
• The climate will just keep getting hotter
• Planting crops that grow well in a hotter climate will help make more food.
• Planting crops that grow well will cause the climate to get cooler