Science Category Review

Which food chain is in the correct order? 

• grasshopper → grass → snake → frog → hawk 
• grasshopper → frog → hawk → snake → grass 
• grass → grasshopper → frog → snake → hawk 
• grass → grasshopper → snake → frog → hawk 

How have desert plants adapted to their environment? 

• by limiting the use of sunlight 
• by storing water 
• by distributing certain nutrients 
• by releasing water 

Why can frogs and snakes live in the same garden?

• Both keep weeds out of the garden. 
• Both help different plants to grow. 
• Both occupy different niches. 
• Both compete for water.

What prevents plant growth beneath the trees in thick forests? 

• The trees limit the amount of sunlight that is able to reach the ground. 
• The roots of the tree make it difficult for plants to grow 
• Little water reaches the ground under the trees
• Little water reaches the ground under the trees

Which is the best example of habitat reduction caused by humans

• Birds and animals flee a forest fire caused by lightning 
• Birds become sick from eating insects new to their area 
• Fish swimming to breeding grounds are blocked by dams 
• A new species of fish migrates up a river competing with native fish or food 

Which statement best describes runoff? 

• Water vapor cools off and changes into water droplets.
• Water in the form of rain, snow, sleet, or hail falls from the clouds.
• Precipitation that falls to Earth ultimately flows over land into lakes, streams, and rivers.
• Water from the oceans and the surface of the earth changes into water vapor.

Sometimes the weather in North Carolina is affected by air masses moving from the Gulf of Mexico. Which best describes these air masses?

• cold and moist
• warm and moist
• cold and dry
• warm and dry

What do meteorologists depend on to forecast an approaching storm?

• air pressure
• temperature
• humidity
• wind speed

Most warm and cold air masses that enter North Carolina are moved by global winds. Which global winds are responsible for most of the local weather in North Carolina?

• northeast trade
• southeast trade
• polar easterlies
• prevailing westerlies

Two people are each pulling on the opposite ends of a rope. If they are pulling on the rope with equal but opposite forces, what will happen to the rope? 

• It will stay in place between the two people.
• It will move toward the right.
• It will move toward the left.
• It will fall to the ground.