5005 Science Praxis

The process by which a gas becomes a liquid is called

A.condensation

B.freezing

C.melting

D.reduction

• A

• B

• C

• D

Which of the following human organs is responsible for the formation of sperm cells?

A.Pancreas

B.Thyroid

C.Ovary

D.Testis

• A

• B

• C

• D

Which of the following best describes the approximate length of time it takes Earth to rotate once about its axis?

A.One hour

B.One day

C.One month

D.One year

• A

• B

• C

• D

Which THREE of the following are generally acceptable rules for laboratory activities?

A.Students should wash their hands after mixing chemicals in the laboratory

.B.Students should inform the teacher immediately of any accidents or spills in the laboratory

.C.Students should use cracked glassware only when the teacher is in the laboratory

.D.Students should read instructions thoroughly before performing laboratory procedures.

• A

• B

• C

• D

Which of the following processes most directly involves the movement of water from the atmosphere to Earth's surface?

A.Infiltration

B.Precipitation

C.Transpiration

D.Sublimation

• A

• B

• C

• D

Which of the following is an important function of the digestive system?A.Absorbing nutrients into the body

B.Transporting signals to and from different parts of the body

C.Providing structural support for the body

D.Protecting the body from ultraviolet radiation

• A

• B

• C

• D

As a rock begins tumbling down a hillside, most of its gravitational potential energy is converted into

A.kinetic energy

B.thermal energy

C.chemical energy

D.nuclear energy

• A

• B

• C

• D

Which of the following is the best example of an interaction between different biotic factors in an ecosystem?

A. A caterpillar undergoing metamorphosis

B. A plant absorbing sunlight

C. A grazing animal eating plants

D. An icicle melting on a warm day

• A

• B

• C

• D

A neutral atom becomes a positive ion when it loses one or more

A.electrons

B.neutrons

C.protons

D.nuclei

• A

• B

• C

• D

Which of the following best describes a galaxy?

A. A small celestial body composed of ice

B. A giant planet orbited by ten or more moons

C. A collection of planets revolving around a star

D. A large cluster of stars, dust, and gas

• A

• B

• C

• D