GENPHYS1- REVIEW QUIZ

Which higher - order thinking science process skill is being emphasized when a science teacher presents students with a controversial scientific article and asks them to critically evaluate the methodology, data, and conclusions?

• A. analyzing

• B. applying

• C. remembering

• D. understanding

An environmental science experiment seeks to examine the effect of soil acidity (pH) on plant growth by using three different types of plants (A, B, and C). Wh ich type of variable is the choice of plant species in this experiment?

• A. controlled
• B. extraneous
• C. dependent
• D. independent

Which of the following best describes the purpose of a controlled variable in an experiment?

• A. It is the variable that the experimenter manipulates.

• B. It is the variable that is measured to determine the outcome.

• C. It is kept constant to isolate the effect of the independent variable.

• D. It is the variable that varies in response to the independent variable.

If two vectors have the same magnitude and are directed at 1.      120 degrees to each other, which statement will best describe about their resultant vector? The resultant vector will be ______________________..

• A. inclined at 30 degrees to the larger vector
• B. inclined at 60 degrees to the smaller vector
• C. twice the magnitude of each individual vector
• D. equal in magnitude to either of the individual vector s

If the area under a velocity vs. time curve is negative, what does this imply about the object's motion? The object is _________________________ .

• A. at rest
• B. accelerating.
• C. moving with constant velocity
• D. moving in the opposite direction of the velocity grap h

During the ascent of a rocket, which of the following is true about its motion?

• A. It maintains a constant velocity.

• B. It decelerates until reaching space.

• C. It experiences constant acceleration.

• D. Its motion depends on the rocket's weight.

What happens to an object in free-fall near the Earth's surface?

• A. It accelerates upward.

• B. It experiences no acceleration.

• C. It maintains a constant velocity.

• D. It accelerates downward due to gravity.

Which of the following factors affects the range the most?

• A. launch angle
• B. air resistance
• C. initial velocity
• D. mass of the projectile

What is the optimal launch angle for a projectile in a vacuum to achieve maximum range with a given initial velocity?

• A. 0 degrees

• B. 30 degrees

• C. 45 degrees

• D. 60 degrees

A rock et is launched into the sky with an initial velocity of velocity of 50 m/s upward. If the rocket's acceleration is 20 m/s², how high will it go before it starts coming back down?

• A. 63 meters

• B. 73 meters

• C. 83 meters

• D. 93 meters