Food Chains, Predators, Herbivores & Carnivores
Food Chained Continued
Ecosystems
Ecosystems & Matter Cycle
Food Webs and the Flow of Energy
100
An animal that eats other animals for food.
What is a carnivore?
100
What nonliving thing is in a food chain?
What is the sun?
100
Which type of organism is there usually the fewest of in an ecosystem?
What is carnivores?
100
If there is too much of this type of gas in an ecosystem the living animals may not survive.
What is carbon dioxide?
100
Several food chains are linked to each other.
What is a food web?
200
An animal that eats only plants.
What is an herbivore?
200
A living thing; could be a plant, animal, or decomposer.
What is an organism?
200
A living thing that breaks down dead plants and animal materials.
What is a decomposer?
200
They use carbon dioxide and release oxygen, include plants, algae, and phytoplankton. They also make their own food, rather than eating other living things.
What are producers?
200
Use these words to correctly show the flow of energy through a food web.
consumers decomposers producers
What are producers → consumers → decomposers?
300
An animal that eats both plants and other animals.
What is an omnivore?
300
Necessary for life! Plants produce it and humans and animals breathe it.
What is oxygen?
300
A substance needed by an organism for health and growth.
What are nutrients?
300
Fill in the blank:
___________ take in carbon dioxide, but decomposers and consumers release carbon dioxide.
What are plants?
300
Choose the statement that most accurately describes why the dinosaurs died.
a. The dinosaurs died from earthquakes set off by the asteroid impact.
b. The dinosaurs burned up instantly from a giant fireball caused by the asteroid.
c. Most dinosaurs starved due to the collapse of their food webs.
d. Most dinosaurs suffocated because they couldn’t breathe air full of asteroid dust.
e. The dinosaurs froze to death when the sun was blocked out.
What is most dinosaurs starved due to the collapse of their food webs?
400
When you go “down” the food chain by continuing to ask “What does it eat?” at what category of living things do you always end up?
What are plants (producers)?
400
In what direction do you draw the arrows in a model of a food chain or food web?
The arrows represent the energy moving through the food chain so the arrows point to whoever is receiving the energy.
400
A way to describe which animal eats other organisms in an ecosystem.
What is a food chain?
400
You have to clean a fish tank but not a pond because...
A fish tank doesn’t have decomposers or plants like a pond does.
400
These organisms were most likely to survive the Cretaceous extinction.
Omnivores, the small animals, the plants, and the decomposers
500
What is an example of a carnivore, herbivore, and omnivore?
Answers will vary.
500
Living things depend upon one another - How do these organisms in a pond ecosystem depend upon one another to survive?
Decomposers depend on animal and plant waste.
Animals depend on plans for oxygen and food.
Plants depend on nutrients and carbon dioxide from the decomposers.
500
A model that shows how food chains connect and overlap.
What is a food web?
500
Fill in the blank:
An ____________ includes all living things (producers, consumers, decomposers) in an area, and their nonliving environment.
What is an ecosystem?
500
Many scientists think that an asteroid caused the dinosaurs to go extinct. Claim: An asteroid impact caused the dinosaurs to go extinct. Name two pieces of evidence that support this claim.
Scientists found a layer of asteroid dust in rocks all around the world. In younger rocks above that layer, there are no dinosaurs. The layer of asteroid dust shows that the entire Earth was affected by dust from an asteroid impact. It could have blocked the sun and caused the dinosaurs to go extinct. Volcanoes in recent history have erupted with so much dust and ash that they changed the earth’s climate and caused a “year without a summer.”
A large crater was discovered in the Yucatán Peninsula, Mexico (Chicxulub Crater). Scientists dated the crater to near the end of the Cretaceous period. The crater at Chicxulub could have been the site where a large asteroid hit the Earth and caused the dinosaur extinction.