WGU INTEG PHYSICAL SCIENCES C165 - PA EXAM

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WGU INTEG PHYSICAL SCIENCES C165 - PA EXAM

QUESTIONS

Qs and Ans - Expert- Explanation - ing score -62 Questions and Answers

-Format: Multiple-choice / Flashcard

Question 1: A galaxy consists of many stars in the same large region of space.

Which phenomenon leads stars to group together to form a galaxy?Gravity between stars Electrical attraction Random coincidence Nuclear force between ions

Answer:

Gravity between stars

Question 2: Which is a characteristic of electromagnetic waves?

Transverse wave motion Travels faster through water than air Longitudinal wave motion Can travel only through a vacuum

Answer:

Transverse wave motion Question 3: A mathematical model is used to predict the trajectory of a bullet fired from a gun.Which discipline of physical science is used to develop this model?Physics Chemistry Earth science Astronomy

Answer:

Physics Question 4: A woman applies an upward force to a basket filled with groceries. Assume she is standing still.What will happen to the basket if the force she applies is greater than the force of gravity?The basket will move sideways.The basket will remain at the same height.The basket will move up.The basket will move down.

Answer:

The basket will move up.

Question 5: What is true during summer in the northern hemisphere?

Earth is closer to the sun than during the winter.Earth rotates more slowly than in the winter.The northern hemisphere receives more direct sunlight than in the winter.The northern hemisphere is tilted less toward the sun than in the winter.

Answer:

The northern hemisphere receives more direct sunlight than in the winter.Question 6: Airport security uses electromagnetic radiation to form images of objects inside passenger luggage.Which type of electromagnetic radiation is used in this way?Radio waves Visible light Ultraviolet radiation X-rays

Answer:

X-rays

Question 7: Which type of wave has a longitudinal motion?

Gamma waves Transverse waves Sound waves Light waves

Answer:

Sound waves

Question 8: A slingshot is a Y-shaped stick with rubber bands between the prongs for shooting stones and other small projectiles. A stone is shot by first placing it in the slingshot holder, which is attached to the rubber bands. The stone and holder are then pulled back, stretching the rubber bands. When released, the stone is propelled forward and leaves the slingshot at a high speed.Which type of energy transformation occurs from the point when the rubber bands are fully stretched to when the stone leaves the slingshot?Chemical potential energy is converted into gravitational potential energy.Gravitational potential energy is converted into thermal energy.Chemical potential energy is converted into gravitational potential energy.Elastic potential energy is converted into kinetic energy.

Answer:

Elastic potential energy is converted into kinetic energy.Question 9: A river flows across a region. As the river flows, it erodes the rock beneath it.Which type of landform will develop if the river continues to flow along a straight path?Valley Dune Glacier Meander

Answer:

Valley Question 10: The well-accepted scientific explanation for many characteristics of Earth's crust states that the crust is broken into several large plates. These plates move slowly over the mantle below because of convection and other processes. Earthquakes and volcanoes are most common at places where the plates interact. Evidence from physics, chemistry, and geology supports this explanation.Which type of scientific idea is this explanation an example of?Hypothesis Theory Law Prediction

Answer:

Theory Question 11: Which of these is an example of climate change caused by natural variation?The low rainfall that helped produce the dust bowl in the American Great Plains The increase in the Sahara desert's area from overgrazing by farm animals in North Africa The decrease in average humidity of the air from draining swampland in an area The decrease of rainfall from cutting down the trees in a rainforest

Answer:

The low rainfall that helped produce the dust bowl in the American Great Plains Question 12: Which force causes graphite from the tip of a pencil to transfer to the paper?Friction Gravity Air Resistance Tension

Answer:

Friction Question 13: During heavy rains, the soil on a farm is washed away into a nearby river.Which parts of the water cycle result in this loss of soil?Choose 2 answers Precipitation Infiltration Runoff Evaporation

Answer:

Precipitation & Runoff

Question 14: Where is metamorphic rock found in the rock cycle?

After erosion and deposition After folding and cracking After heat and pressure After melting and cooling

Answer:

After heat and pressure Question 15: Astronomers have long accepted that plate tectonics exists nowhere in our solar system except on Earth. In 2011, a scientist analyzed 100 NASA-space-mission photographs of Valles Marineris on Mars, the longest known series of canyons in the solar system. The scientist found that Valles Marineris showed features found only in locations on Earth where major tectonic plates divide.What would be the appropriate response of scientists to this information?Reject plate tectonics on Mars as the explanation because it contradicts accepted science Decide whether to accept plate tectonics on Mars based on the reputation of scientists involved Hold public debates among scientists and then vote whether plate tectonics occurs on Mars Carry out further research to gain more understanding of possible plate tectonics on Mars

Answer:

Carry out further research to gain more understanding of possible plate tectonics on Mars