Earth & Seasons
Water & Weather
Plants & Life Processes
Cycles & Atmosphere
Ecosystem Changes & Stresses
Human Impact & Species
100

 This causes Earth to experience different seasons.

What is Earth’s tilt and its orbit around the Sun?

100

 All of Earth’s water—liquid, solid, and gas—is called this.

What is the hydrosphere?

100

 This process in plants is the opposite of cellular respiration

What is photosynthesis?

100

 This gas makes up most of Earth’s atmosphere.

 What is nitrogen?

100

 Any physical hazard caused by too much or too little of needed resources is called this.

What is a stress to an ecosystem?

100

 An organism that naturally lives in an ecosystem is called this.

What is a native species?

200

 This season is known as a time of new growth for living things.

What is spring?

200

This process changes liquid water into water vapor.

What is evaporation?

200

 Plants release water into the air through their leaves by this process.

What is transpiration?

200

True or False:  Lightning can change nitrogen gas into usable compounds.

What is True 

200

 A series of gradual changes in organism populations is known as this.

What is succession?

200

 An organism introduced to a new ecosystem that causes harm is this.

What is an invasive species?

300

 Some parts of the Earth experience only this many seasons.

What are two seasons 

300

 This occurs when water vapor cools and turns into liquid water.

 What is condensation?

300

Plants need nitrogen to grow and make these.

What are proteins?

300

 Some nitrogen-fixing bacteria live in nodules on these plant parts.

What are roots?

300

 This is the largest man-made stress on ecosystems.

What is habitat destruction?

300

 This happens when fish are removed faster than they can reproduce.

What is overfishing?

400

 God uses these repeating patterns to help maintain His Earth.

What are cycles?

400

Heavy seasonal winds that change direction are known as these.

 What are monsoons?

400

 These organisms reproduce by spores and do not make their own food.

What are fungi?

400

 The movement of carbon between the atmosphere, Earth, and organisms is called this.

What is the carbon cycle?

400

 Fire can help ecosystems by doing this.

What is recycling nutrients into the soil?

400

 The red drum population declined in the 1980s because of this.

What is overfishing?

500

 True or False: Changes in ecosystems always happen quickly.

False 

500

True or False: Floods are always beneficial to the environment. 

False

500

 Bacteria and these organisms break down dead plants and animals.

What are decomposers?

500

This process uses oxygen to break down sugar and release energy.

What is cellular respiration?

500

 True or False: Not all fires should be put out immediately.

What is True

500

 What happened to the last passenger pigeon in 1914.

What is died in captivity?

600

True or False: Seasons are caused by how far Earth is from the Sun.

False

600

 A long period of very little rainfall is called this.

What is a drought?

600


 True or False: Plants can absorb water through their leaves.

What is True

600

What process do plants use to produce food?

What is photosynthesis 

600

 True or False: Stresses were part of God’s original good creation.

What is False

600

 An organism that no longer exists is called this.

 What is extinct?

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