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3rd 9 Weeks Benchmark Review Answer Key

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About Our Planet
#1

Earth _______________ on its _______________.

Earth Rotates on its Axis.

#2

How long does it take Earth to make a full rotation on its axis?

1 day

#3

It takes Earth 1 year to orbit around the sun. What is a synonym for "orbit?"

Revolve or Revolution! Earth revolves around the sun.

#4

Tell me two characteristics about the Earth, the Sun, and the Moon.

 

Earth:

1.

2.

 

Sun:1.

2.

 

Moon:1.

2.

 

 

  

#5

Look at the diagram below. In the pink circle, what season is it in the Northern Hemisphere?

 

It is winter. The Northern Hemisphere is tilted away from the sun.

Natural Resources
#1

List the three fossil fuels.

  1. Coal
  2. Oil
  3. Natural Gas
#2

Four things are needed in order to make fossil fuels. What are they?

  1. Organic Matter
  2. Heat
  3. Pressure
  4. Time
#3

Hoover Dam is an example of what renewable resource?

 

 

Hydroelectricity

 

 

#4

I live in a house with special panels on the roof that help me get electricity. My town also has windmills in several places that help supply the city with power. I also have a friend that has pipes under her house that help her keep warm in the winter.

 

What type of natural resources am I talking about here?

  1. Solar Energy
  2. Wind Energy
  3. Geothermal Energy
#5

We talked about 5 resources that are renewable and 3 resources that are non-renewable. Please list them.

Renewable:

  1. Biofuels
  2. Solar Energy
  3. Wind Energy
  4. Hydroelectricity
  5. Geothermal

Non-Renewable

  1. Coal
  2. Oil
  3. Natural Gas
Ecosystems
#1

Which is an interaction of a living organism with a non-living component of an ocean ecosystem?

A

A sea turtle burying its eggs in sand

B

A killer whale eating harbor seals

C

Dolphins communicating with each other

D

A jelly fish stinging its prey

A sea turtle burying its eggs in the sand.

#2

Plants and animals have different needs that are met by their environment. Which of the following are examples of resources the environment provides that are needed by both plants and animals?

A

Sunlight and water

B

Soil and air

C

Water and air

D

Sunlight and soil

Water and Air.

#3

The ecosystem of some dairy cows includes the fields in which they graze, eating the grass they need. Too many cows can be harmful to their ecosystem because they could -

A

produce too much milk

B

scare away predators

C

raise the temperature

D

remove all the vegetation

D. Remove all Vegetation

#4

If humans over-hunted a population of insect-eating birds, what immediate change would likely be seen in the area?

A

Severe loss of vegetation

B

Migration of small mammals

C

Increased seedling germination

D

Increasing populations of insects

D. Increasing Population of Insects

#5

If a new stadium was built on land that used to be a forest, what sort of changes to the environment do you predict will happen?

  

Food Webs and Food Chains
#1

This is an example of a...... ?

Food chain!

#2

Define these words:

  • Producer
  • Consumer
  • Decomposer

Producer: An organism that uses energy from the sun to produce its own food.

 

Consumers: Cannot produce their own food. They get their energy by consuming other plants and animals.

 

Decomposer: An organism that breaks down organic matter.

#3

What do the arrows show in a food web or a food chain?

The arrows show where the energy is going.

#4

In this food web, what does the alligator lizard eat?

 

 

 

  • Earthworms
  • Millipedes
  • Pillbugs
  • Insect Larvae
  • Crickets
#5

Look at this picture. Please give me an example of each of the following, and tell me if the organism is a carnivore, herbivore, or omnivore.

 

  • Producer
  • Primary Consumer
  • Secondary Consumer

 

  

The Carbon Cycle
#1

There are 3 atoms in a molecule of CO2. What are they?

#2

Humans breathe in _______________ and breathe out ________________.

Humans breathe in oxygen and breathe out carbon dioxide.

#3

The diagram represents the role of a plant in the carbon dioxide/oxygen cycle. Letter X represents the plant releasing -

 

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Oxygen!

#4

What source of energy drives the carbon cycle? Why?

The sun!

#5

Students set up terrariums that were sealed glass containers with lizards and cactuses. The graph is about the number of plants and animals placed in each terrarium. Based on the data, which terrarium will have a high amount of carbon dioxide in the atmosphere?

 

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Terrarium #4.

Final Question

The Mountain Pine Beetle is a destructive insect pest that kills many trees in forests during an outbreak. Looking at the image here, notice the brown trees that have been affected by the Pine Beetle. Describe all of the effects to the forest ecosystem and the organisms that live there that you predict will happen during the Pine Beetle population outbreak.

 

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