Earth Science
Physical Science
Life Science
Mixed Review 1
Mixed Review 2
100

Which landform provides evidence that a destructive process changed Earth's surface?

A. delta

B. floodplain

C. river canyon

D. volcanic island 

C. river canyon

100

Which statement describes the difference between static electricity and electric current?

A. Only electric current involves energy.

B. Only electric current involves the movement of electrons.

C. Only static electricity involves sudden electric discharges.

D. Only static electricity involves negative and positive charges. 

C. Only static electricity involves sudden electric discharges.

100

Which statement explains why plant cells have chloroplasts but animal cells do not?

A. Plants reproduce from seeds, but animals do not.

B. Plants make their own food from sunlight, but animals do not.

C. Animals have bones and muscles for support, but plants do not. 

D. Animals can move from one place to another, but plants cannot.  

B. Plants make their own food from sunlight, but animals do not.

100

Which of these is a chemical property?

A. whether a substance folds

B. whether a substance dissolves

C. whether a substance reacts with oxygen

D. whether a substance changes from a liquid to a gas

C. whether a substance reacts with oxygen

100

Which substance does NOT have a fixed volume or fixed shape?

A. ice in a freezer

B. water in a lake

C. water vapor in the air 

D. snow in a snowman 

C. water vapor in the air 

200

Where are you most likely to encounter levees? 

A. across rivers

B. in cities and towns

C. along the banks of rivers

D. at right angles at beaches 

C. along the banks of rivers 

200

What happens when a mixture is separated?


A. A. substance is lost.

B. A new substance is formed.

C. The substances stay the same.

D. The mass of the substances changes. 


C. The substances stay the same.  (It is a physical change!)

200

What is true of instincts AND learned behaviors?

A) They are inherited from parents.

B) They are acquired during a lifetime.

C) They are characteristics that can change.

D) They are characteristics of living things.

D) They are characteristics of living things.

200

Which of these is a way to make an electromagnet stronger?

                      

A. putting a switch in the electrical current

B. replacing the iron core with a copper core

C. replacing the copper wire with a plastic wire

D. wrapping the wire around the iron core more times

D. wrapping the wire around the iron core more times

200

Some students are planning an experiment. They need to be able to vary the strength of a magnet. Which type of magnet should they use?

A. bar magnet

B. electromagnet

C. horseshoe magnet

D. refrigerator magnet 


B. electromagnet

300

Which landform is created by wind?

A. dune

B. delta

C. moraine

D. floodplain

A. dune

300

Which of these will the south pole of a bar magnet repel?

A. a paper clip

B. an iron nail

C. the north pole of another magnet

D. the south pole of another magnet

D. the south pole of another magnet

300

How are apple trees and moss alike?

A. They have flowers.

B. They make their own food.

C. They reproduce from seeds.

D. They get food from other plants. 

B. They make their own food.

300

A scientist is studying plants in a meadow. In which way is the scientist MOST LIKELY to classify the plants?

         

A. by how they reproduce

B. by how they get energy

C. by which animals eat them

D. by whether their cells have a cell wall 

A. by how they reproduce

300

A student argues that some microorganisms are harmful. Which is evidence the student could use to support her argument?

A. Some bacteria causes diseases.

B. Some fungi are microorganisms.

C. Some algae are producers in oceans.

D. Some bacteria live in the human gut. 

A. Some bacteria causes diseases.

400

Coastal erosion is reducing the size of a town's beach. Town leaders want to understand how to use technology to control the erosion. Which question should leaders ask?


A. How do dams trap sand?

B. How do groins trap sand?

C. How can storm drains reduce flooding?

D. How can weather records be used to map floodplains?

B. How do groins trap sand?

400

A puddle of water on the sidewalk evaporated. Which statement could explain what happened?

                

A. The temperature fell below zero degrees Celsius, making the water freeze.

B. The temperature fell below zero degrees Celsius, making the water turn into vapor.

C. The sun heated the water, which changed from a liquid to a gas.  

D. The sun heated the water, which changed from a solid to a liquid.  

C. The sun heated the water, which changed from a liquid to a gas.  

400

Which of these human traits is an acquired physical trait?

A. pale skin

B. black hair

C. green eyes

D. broken finger

D. broken finger

400

Which is a learned behavior in dogs?

       

A. knowing how to bark

B. knowing how to open a door

C. knowing how to sniff for smells

D. knowing how to chase a squirrel

B. knowing how to open a door

400

Some trees have a crooked trunk. Which question would a scientist ask to determine whether the crooked trunks are an inherited or an acquired trait?


A. What kind of tree is it?

B. How much water does the tree get?

C. Is the crooked trunk a behavior or a physical trait?

D. Do seeds from the tree produce new trees that grow with crooked trunks?

D. Do seeds from the tree produce new trees that grow with crooked trunks?

500

Over time, some ocean cliffs disappear, and the shoreline moves inland. Which Earth processes MOST LIKELY cause these changes? Select TWO processes.

             

A. erosion

B. earthquake

C. deposition

D. weathering

E. volcanic eruption 

A. erosion

D. weathering 

500

A student replaces a switch in an electrical circuit with an object. A light bulb in the circuit does NOT light up. What can the student conclude about the object?

A. It is too large.

B. It is an insulator. 

C. It is a conductor.

D. It is made of metal. 

B. It is an insulator. 

500

Mammals and fish breathe oxygen. Algae in lakes and oceans release oxygen. Which argument is supported by its evidence?

A. All organisms need oxygen.

B. Some microorganisms are harmful.

C. Some microorganisms are beneficial.

D. Some organisms harm microorganisms.  

C. Some microorganisms are beneficial.

500

Which of these are physical changes? Select TWO answers.

A. a nail rusts

B. a twig burns

C. a ruler breaks

D. a spoon tarnishes

E. a sugar cube dissolves

C. a ruler breaks

E. a sugar cube dissolves

500

A scientist makes a model of a plant cell. Which parts should she include in her model? Select THREE answers. 

             

A. stem

B. seed

C. nucleus

D. cell wall

E. chloroplasts

C. nucleus

D. cell wall

E. chloroplasts