Unit 6 Review Flashcards
(32 cards)
Of all the water on earth, what percentage is drinkable?
3%
Why might the amount of available freshwater found in glaciers and the ice caps change over time?
If glaciers and ice caps melted into the ocean, there would be nothing left for us to drink.
What are some ways that growing food can harm the environment?
The chemicals in pesticides and fertilizers may create greenhouse gases
What may happen if people decide to eat only foods grown close to where they live?
we would save energy and make less pollution
What are some causes of air pollution?
- Cars and factories burn fuel. That fuel sends harmful greenhouse gases into the atmosphere.
- Natural events like volcanic eruptions and wildfires, can also pollute the air
What are three negative results of deforestation?
- Animals lose their home
- Changes in the global climate
- More carbon dioxide stays in the air
What makes up the largest percentage of trash?
Paper
What is a way that people can avoid adding to the amount of trash humans make each year?
- Taking cloth bags to the store
- Recycling
What are the 5 Rs?
- Reduce
- Reuse
- Recycle
- Repair
- Rethink
How can conveniences like cars and electricity be both good and bad?
It’s convenient but it pollutes
What is a carbon footprint?
A carbon footprint is a measure of our activities. It shows the amount of fossil fuels that we burn.
What may happen to your carbon footprint when you heat a cup of water for hot chocolate rather than a full pot?
The footprint is smaller because it uses less fuel.
Over time, what resources may increase if everyone boiled a cup of water for a hot drink rather than a whole pot?
Energy
Name at least three ways you can help the environment.
- Let others know about ways they can help the environment
- Start a blog about ways to reduce your carbon print
- Make something new out of something old
Name at least three ways you can help the environment.
- Look for products with less packaging
- Keep energy costs low by turning off unused lights
- Plant trees
What’s are good thermal insulators?
Wood and plastic
What is the difference between a thermal CONDUCTOR and a thermal INSULATOR?
A thermal conductor allows heat energy to pass through it easily by collisions of its molecules, and thermal insulator does not allow energy to pass through easily in this manner.
What type of solid (metal, plastic, or wood) conducts heat energy the best?
metal
True or false
When heat energy is conducted through a piece of metal, molecules move more slowly after they get bumped by their faster-moving neighboring molecules
false
Why do researchers use graphic organizers?
To illustrate the information.
What is a KWL chart?
Know
Want to know
I’ve learned
What are some types of sources for finding your facts?
Books, magazines, newspapers, and DVDs
When you find information you want to use, what do you need to write down before you even write the information?
The source
When you find information you want to use, how do you take notes about it?
State information in a different way or explain that you are quoting someone else
