3 rd Grade Edition Fall 2012, Version 1.0

Earth’s Resources The World Around Us Plants and Animals WaterEnergy

Earth’s Resources for 200 Air, water, soil, trees, and minerals are examples of these.

Earth’s Resources for 200 What are resources?

Earth’s Resources for 400 Natural resources are always found in, on, or above this.

Earth’s Resources for 400 What is the Earth?

Earth’s Resources for 600 These natural resources can be produced, regrown, or reused fast enough to keep up with how quickly they are used.

Earth’s Resources for 600 What are renewable resources?

Earth’s Resources for 800 When fossil fuels like coal, oil, and natural gas are used up, they are gone forever, and are called this.

Earth’s Resources for 800 What are non-renewable resources?

Earth’s Resources for 1000 When we save or use less of a resource, we are doing this.

Earth’s Resources for 1000 What is conserving?

The World Around Us for 200 Living and non-living things that interact in an environment make up one of these.

The World Around Us for 200 What is an ecosystem?

The World Around Us for 400 The path of food in an ecosystem from one living thing to another.

The World Around Us for 400 What is a food chain?

The World Around Us for 600 The most productive layer of soil is called this.

The World Around Us for 600 What is topsoil?

The World Around Us for 800 The loss of a single one of these can affect the food chain of an entire ecosystem.

The World Around Us for 800 What is single species?

The World Around Us for 1000 We need air to breathe, but cars, trucks, and factories, or even fires can make it dirty, which is called this.

The World Around Us for 1000 What is air pollution?

Plants and Animals for 200 These provide food and habitats for animals, hold soil in place to reduce erosion and improve water quality, and provide people with food, materials for shelter, fuel to warm us, and replenish the air we breathe..

Plants and Animals for 200 What are plants?

Plants and Animals for 400 The term for when a species is gone forever, which can happen naturally or be caused by humans.

Plants and Animals for 400 What is extinction?

Plants and Animals for 600 Plants are producers, animals are consumers, and these get their food by breaking down wastes or dead things which help clean our environment.

Plants and Animals for 600 What are decomposers?

Plants and Animals for 800 These are dispersed, or moved, by the wind, water, people, and animals, helping more plants grow in new places.

Plants and Animals for 800 What are seeds?

Plants and Animals for 1000 Leaves from plants help clean our air by taking in and storing carbon dioxide (a harmful greenhouse gas) and giving off this.

Plants and Animals for 1000 What is oxygen?

Water for 200 The existence and movement of water on, in, and above the Earth.

Water for 200 What is the water cycle?

Water for 400 Two types of aquatic ecosystems are fresh water and this.

Water for 400 What is salt water?

Water for 600 Seventy percent of this is covered by water.

Water for 600 What is the Earth’s surface?

Water for 800 The percentage of water on Earth that can be used by people for drinking, washing, and watering plants.

Water for 800 What is less than 1 percent?

Water for 1000 Turning off the water while brushing your teeth, and taking a shower instead of a bath are examples of this.

Water for 1000 What is water conservation?

Energy for 200 Most of the energy on Earth comes from this.

Energy for 200 What is the sun?

Energy for 400 The most common form of energy we use at home and at school.

Energy for 400 What is electricity?

Energy for 600 Coal, which is burned to make electricity, is an example of this kind of fuel.

Energy for 600 What is a fossil fuel?

Energy for 800 Using compact florescent bulbs, turning off lights when we leave a room, and unplugging cell phone and game chargers are examples of this.

Energy for 800 What is energy conservation?

Energy for 1000 It generally uses less energy to make a product from these kinds of materials than it does to make a product from new materials.

Energy for 1000 What is recycled?

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