Science 3GCh 1b

Where Living Things are FoundScience

ReviewChapter 1b Flash Cards!

Science 3GCh 1b

A forest of trees that form seeds in a cones is a

coniferous forestConiferous forests grow where weather is very

cold. Coniferous trees are evergreen, like Christmas trees and do not loose their

needle-like leaves.

Science 3GCh 1b

A ____ is an area of land that contains very little rainfall.

desert

Science 3GCh 1b

An area where the main plants are trees is called a

_________

forest

Science 3GCh 1b

The type of forest growing in a hot rainy area is a _______ ____ forest

tropical rain forest

Science 3GCh 1b

A pond is an ______ of living and nonliving things that

affect one another.

ecosystem

Science 3GCh 1b

All frogs living in a pond make up a __________

population

Science 3GCh 1b

Everything around a plant or an animal is its _________

environment

Science 3GCh 1b

The edge of a pond is a good ________ for cattails.

habitat

Science 3GCh 1b

All the populations in an ecosystem form a _________

community

Science 3GCh 1b

A forest of tall trees growing where there is a lot of rain

and the weather is NOT very cold or hot is a ______ forest

coastal forestThese forests are most like a tropical rain

forest, except that it is usually found near the coast, where the weather is more mild.

Science 3GCh 1b

A forest of trees that loose and grow new leaves each

year is a _______ forest

deciduous forestThese forests are found in the northeastern

portion of the United States. Plants and animals which live there, must be able to survive hot summers and cold winters.

Science 3GCh 1b

More types of living things live in ___________ than anywhere else on Earth

tropical rain forests

Science 3GCh 1b

Name the layers of a tropical rain forest

canopy (top)

under story (middle)

forest floor (bottom)

Science 3GCh 1b

Which would probably not be found in a deciduous forest.Moss, cactus, shrubs, ferns

CactusSince the cactus stem stores lots of water, freeing temperatures will freeze

and kill the entire plant.

Science 3GCh 1b

Oceans and seas contain ____ water.

salt waterSalt water surrounds the continents.

Just for fun: By some estimates, if the salt in the ocean could be removed and spread evenly over the Earth’s land surface it would form a layer more than 500 feet (166 m) thick, about the height of a 40-story office

building.

Science 3GCh 1b

Lakes, rivers, ponds and streams usually contain

_____ water.

fresh waterFresh water is found inland. Most fresh water comes from from rain and melted snow, which contains

few minerals.

Science 3GCh 1b

Why are oceans salt water and lakes fresh water?

Fresh water does have a very small amount of salt in it, but not enough to taste salty.

Salt is a mineral found in rock. Rain and snow break down the rock and carries the salt down rivers and streams to lakes, ponds and oceans. Since oceans exist longer than lakes, they have gathered much

more salt, over time.

Science 3GCh 1b

How much of the Earth’s surface is covered in water?

2/3

water

land

Science 3GCh 1b

What is the Earth’s largest ecosystem?

Oceans

Oceans cover most of the world.

Science 3GCh 1b

Can an ecosystem survive after a fire?

Yes. Seeds that are protected underground can form new

plants which can later provide habitats for returning animals.

Science 3GCh 1b

Why are conifers shaped like triangles and have needles

instead of leaves?

The triangle shape causes snow to slide down the tree. The needles are narrow so snow may fall through the

tree.

Science 3GCh 1b

Why is it unusual to find a cactus growing in a coastal

forest?

Cactus prefer hot dry climates.

Science 3GCh 1b

What is the function of the spiny leaves of a cactus?

to protect it from predators

Science 3GCh 1b

Why do cactus have long shallow roots?

So they can take up the little bit of rain in a desert climate, that will not have a chance to soak

deep into the ground.

Science 3GCh 1b

What is the function of the thick stem of a cactus?

to store water