Tag: physics

Quizzes (598) Questions (13441)

Questions Related to physics

Multiple choice physics heat and energy causes of greenhouse effect global warming adaptation in animals

Which of the following is/are the advantages of global warming?

  1. Arctic, Antarctic, Siberia, and other frozen regions of earth may experience more plant growth and milder climates.

  2. The next ice age may be prevented from occurring.

  3. Less need for energy consumption to warm cold places.

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The advantages of global warming are;

  • The Arctic, Antarctic, Siberia, and other frozen regions of the earth might experience more plant growth and milder climates.
  • The next ice age could possibly be prevented.
  • The Northwest passage through the formerly icy Canadian Arctic Archipelago could arguably open up to transportation.
  • Fewer deaths or injuries would occur due to arctic conditions.
  • Longer growing seasons could mean increased agricultural production in some areas.
  • Previously untapped oil and gas reserves might become available.

Multiple choice physics heat and energy causes of greenhouse effect global warming adaptation in animals

Which of the following is the effect of global warming?

  1. The effect on agriculture

  2. Climate changing effect human too

  3. The green-house effect

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Global heating will effect on type of crops and its various natural features.Moreover humans will feel the extra heat and also the deplete of ozone gas.

Multiple choice physics heat and energy causes of greenhouse effect global warming adaptation in animals

Which of the following effect is due to global warming?

  1. Water shortages in already water-scarce areas.

  2. Increased deaths from heat waves.

  3. Extinction of additional species of animals and plants.

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The effects of global warming or climate damage include far-reaching and long-lasting changes to the natural environment, to ecosystems and human societies caused directly or indirectly by human emissions of greenhouse gases. It also includes the economic and social changes which stem from living in a warmer world. Global warming stresses ecosystems through water shortages in already water-scare areas. increased deaths from heat waves, extension of additional species of animals and plants etc.

Multiple choice physics heat and energy causes of greenhouse effect global warming adaptation in animals

A metal ball kept in a cooling room, cools from $72^oC$ to $60^oC$ in $10 $ minutes; and to $52^oC$ in next $10$ minutes. Calculate the temperature of the cooling room

  1. $35^oC$
  2. $38^oC$
  3. $39^oC$
  4. $36^oC$
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Using Newton's Law of Cooling, the rate of cooling is proportional to the temperature difference between the object and the surroundings. By setting up two equations for the two intervals, the room temperature can be calculated as 36 degrees Celsius.

Multiple choice physics heat and energy causes of greenhouse effect global warming adaptation in animals

When we are near to ice, why do we feel cold?

  1. Because our body temperature is higher than the surrounding temerature

  2. Because there is ice near to us

  3. Because we wear warm cloth

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

When we are nearer to the ice, our body temperature is higher than the surrounding temperature. So heat flows from out body to the surrounding resulting in lowering the body temperature. Thus we feel cold when being nearer to the ice.

Multiple choice physics heat and energy causes of greenhouse effect global warming adaptation in animals

The global warming has resulted in

  1. the increase in yield of crops

  2. the decrease in sea levels

  3. the decrease in human deaths

  4. the increase in sea levels
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Two major mechanisms are causing sea level to rise.
First, shrinking land ice, such as mountain glaciers and polar ice sheets, is releasing water into the oceans.
Second, as ocean temperatures rise, the warmer water expands. 
The warming of the atmosphere caused by increases in greenhouse gases is melting glaciers and causing ocean water to warm and expand thermally. Both effects increase the volume of the ocean, raising its surface level.
Thus Option D is correct.

Multiple choice physics heat and energy causes of greenhouse effect global warming adaptation in animals

Why do we feel cold during winter?

  1. Because our body temperature is higher than surrounding temperature

  2. Because our body temperature is lower than surrounding temperature

  3. It doesn't depend on our body temerature

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

During winter, our body temperature is higher than the surrounding temperature. So heat flows from out body to the surrounding resulting in lowering the body temperature. Thus we feel cold during winter.

Multiple choice physics heat and energy causes of greenhouse effect global warming adaptation in animals

When we use blanket why do we feel warm?

  1. Because the blanket is warm

  2. Because the blanket doesn't allow air to enter

  3. Because our body is warm

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Cold air tries to carry body heat away. Blankets form a barrier between the body and cold air. Hence heat doesn't transfer through the blankets as air will not flow through the blankets.

Multiple choice physics heat and energy causes of greenhouse effect global warming adaptation in animals

Without green house effect, the average temperature of earths surface would have been :

  1. $-18^{\circ}C$
  2. $33^{\circ}C$
  3. $0^{\circ}C$
  4. $15^{\circ}C$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

If an ideal thermally conductive black body were the same distance from the Sun as the Earth is, it would have a temperature of about 5.3 C. However, since the Earth reflects about 30% of the incoming sunlight, this idealized planet's effective temperature (the temperature of a black body that would emit the same amount of radiation) would be about 18 C. The surface temperature of this hypothetical planet is 33 C below Earth's actual surface temperature of approximately 14 C. The mechanism that produces this difference between the actual surface temperature and the effective temperature is due to the atmosphere and is known as the greenhouse effect.
Thus Option A is correct.