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- Question
What type of heat transfer is boiling water?
Options- A. radiation
- B. conduction
- C. convection
- D. None of the above
- Correct Answer
- convection
ExplanationConvection is by far the most efficient and common way for heat to be transferred through liquids and gases. It occurs when some regions of a fluid get hotter than others, causing currents in the fluid that move it around to distribute that heat more evenly.
- 1. The odometer guage indicates
Options- A. the distance travelled by a vehicle
- B. the depth of the ocean
- C. pitch length
- D. frequency of the wave Discuss
- 2. A spring is an example of which of these
Options- A. Newton's 3rd law
- B. Hooke's law
- C. Newton's 1st law
- D. Conservation of mass law Discuss
- 3. Which is a correct way to measure wavelength?
Options- A. Nearest peak to peak
- B. Nearest peak to nearest trough
- C. Nearest trough to peak
- D. None of the above Discuss
- 4. What factors contribute to global winds?
Options- A. Coriolis Effect
- B. Convection Cells
- C. Uneven warming of the earth by the sun
- D. All of the above Discuss
- 5. What does it mean if a micrograph is false colored? Discuss
- 6. Thermohaline circulation is mainly due to
Options- A. cold, dense ocean water sinking and warmer water replacing it
- B. winds causing circulation of ocean water
- C. warmer, less dense water sinking in the ocean and cold water replacing it
- D. warm water being added to the ocean due to industial waste Discuss
- 7. Magnetism in materials is due to
Options- A. Displacement of electrons
- B. Circular motion of electrons
- C. Charges of neutrons
- D. All of the above Discuss
- 8. The temperature at which water boils depends mainly on
Options- A. Air Pressure
- B. Specific heat
- C. Density
- D. Relative humidity Discuss
- 9. Electric charges that are different attract each other.
Options- A. TRUE
- B. FALSE Discuss
- 10. Granite is the examples of which rock ?
Options- A. Igneous rock
- B. Sedimentary rock
- C. Calcareous rock
- D. Matamorphic Discuss
Physics problems
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Correct Answer: the distance travelled by a vehicle
Explanation:
The odometer or the odograph is an instrument used to indicate the distance travelled by the vehicle.
Correct Answer: Hooke's law
Explanation:
When you compress or stretch a spring, as soon as the stress is relieved, the spring attains its normal shape instantly. Its Elastic potential energy helps it do so. Generally, these elastic substances follow the Hooke?s law.
According to this Law, the force needed to change the shape of spring is proportional to the displacement of the spring. The displacement referred here is how far the spring is compressed or stretched from its normal shape. Mathematically, Hook?s Law can be summarised as F= ? k x. Here ?k? is the spring constant and ?x? is the displacement.
Correct Answer: Nearest peak to peak
Explanation:
Wavelength of a wave can be measured with the distance between two nearest crest and crest or nearest troughs. It is measured as armstrong units.
Correct Answer: All of the above
Explanation:
All of the factors that contribute to global winds are
1) Uneven warming of the earth by the sun
2) Coriolis Effect
3) Convection Cells
Correct Answer: If a micrograph is false-colored, it means that the computer has created the colour for the object since we know that the electron microscopes sees only black and white colours
Correct Answer: cold, dense ocean water sinking and warmer water replacing it
Correct Answer: Circular motion of electrons
Explanation:
Magnetism in materials is due to circular motion of electrons.
Correct Answer: Air Pressure
Explanation:
The temperature at which water boils depends mainly on air pressure.
Correct Answer: TRUE
Correct Answer: Igneous rock
Explanation:
It forms slow crystallization of magma below Earth's surface.Granite is a hard light-colored igneous rock and it is composed mainly of quartz and feldspar with minor amounts of mica, amphiboles and other minerals it is mainly used for building and monuments
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