6th Science House Party

Which statement best describes how the environment supports populations and communities of plants and animals in the ocean ecosystem?

• Marine plants use the saltwater to grow larger. Marine animals drink the saltwater for nutrients.

• Marine plants grow larger in the coral reefs. Marine animals do not live in the coral reefs because of predators.

• Algae produces freshwater in the ocean through photosynthesis. Plankton and fish live in the fresh water.

• Marine plants use the sunlight to make their own food. Marine animals eat the plants and other marine animals.

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What will most likely happen if bees are removed from the ecosystem?

• Flowers could be pollinated but would produce smaller seeds, making less food for plant-eaters.

• Some flowers would not be pollinated, fewer seeds would be produced, and there would be less food for plant-eaters.

• Flowers could be pollinated and would produce more seeds, making more food for plant-eaters.

• Flowers would not be pollinated, more seeds would be produced, and there would be more food for plant-eaters.

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The roadrunner is a desert bird that eats fruits and seeds. It also eats insects, spiders, scorpions, and rattlesnakes. What would likely happen if the roadrunner population disappeared from its ecosystem​ ​ ​ ?​ ​ (a)  

• increase in scorpion population
• rattlesnake population would stay the same
• There would be no more fruits or seeds.
• decrease in spider populations.

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Match the following

• Alligator

• 
• coyote

• 
• buffalo

• 
• frogs

• 

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Select 3 Abiotic Factors

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The main reason a baseball comes down when a boy tosses it up into the air is​ (a)    —

• Gravity pulling down
• Gravity pushing into the air
• magnetism pulling down
• magnetism pushing the ball

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The magnet shown above will attract all of the following EXCEPT —

• a nail

• another magnet

• steel scissors

• a penny

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What type of force is used to throw the ball?

• A pull to move the ball across the field

• A push to move the ball away from the athlete

• Friction to make the ball move faster

• Gravity to keep the ball close to the ground

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Students observe the force of a magnet attracting nails.  What type of force is this demonstrating?        

• push

• motion

• gravity

• pull

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Label the Image

a

b

c

Population

Ecosystem

Community

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