
What is a habitable zone, and how is the idea useful? Is a planet in the habitable zone necessarily habitable? Explain.

The definition of the habitable zone with its usefulness and discuss the habitability of the planets belonging to the same habitable zone.
Answer to Problem 1RQ
Habitable zones are the area around the central star which has an possiblity of supporting life. Every planet present in an habitable zone does not neseccarily support life as there are various other factors which are required for life to exist on a planet.
Explanation of Solution
Habitable zone is an area around a particular star i.e. the orbital region which has an ability to support different forms of life. The sustenance of life on a particular planet is determined by presence of the various life supporting matters such as water, oxygen, carbon dioxide etc. The planets belonging to the same habitable zone has a higher possibility of life sustenance as the conditions they are exposed to is similar.
All the planets present in a habitable zone does not necessarily support life because there are various other factors which is helpful to determine the habitability of the planet. Factors which are necessary to support life on a planet is as given below.
Luminosity- It is defined as the brightness of the planet in other words the temperature on the planet.
If the solar system in which the sun is the central star is considered, the luminosity of the planets can be determined by the distance of the planets from the sun.
To maintain an optimum temperature the planet need to be in a region which is neither too close to the sun nor too far. Closeness to the sun makes the planet hotter and the distant planets are at very lower temperature. Thus luminosity which can be determined by the distance from the sun plays an important role in sustenance of life.
Size of planet- Except the distance of the planet from the central star, its size plays an important role to sustain life. The planet needs to be large enough to retain heat and to bear plate tectonics to regulate the climate.
Atmospheric conditions- The atmosphere on the planet should be sufficient to retain the liquid water on the surface. Also its presence prevents the exposure of the life to various harmful radiations which play a vital role of existence of life on the planet.
Conclusion:
Thus, habitable zones are the area around the central star which has a possibility of supporting life. Every planet present in an habitable zone does not necessarily support life as there are various other factors which are required for life to exist on a planet.
Want to see more full solutions like this?
Chapter 10 Solutions
Life in the Universe (4th Edition)
Additional Science Textbook Solutions
Physics for Scientists and Engineers: A Strategic Approach, Vol. 1 (Chs 1-21) (4th Edition)
Anatomy & Physiology (6th Edition)
Campbell Biology: Concepts & Connections (9th Edition)
Microbiology with Diseases by Body System (5th Edition)
Campbell Biology (11th Edition)
Microbiology: An Introduction
- An electromagnetic wave is traveling through vacuum in the positive x direction. Its electric field vector is given by E=E0sin(kx−ωt)j^,where j^ is the unit vector in the y direction. If B0 is the amplitude of the magnetic field vector, find the complete expression for the magnetic field vector B→ of the wave. What is the Poynting vector S(x,t), that is, the power per unit area associated with the electromagnetic wave described in the problem introduction? Give your answer in terms of some or all of the variables E0, B0, k, x, ω, t, and μ0. Specify the direction of the Poynting vector using the unit vectors i^, j^, and k^ as appropriate. Please explain all stepsarrow_forwardAnother worker is performing a task with an RWL of only 9 kg and is lifting 18 kg, giving him an LI of 2.0 (high risk). Questions:What is the primary issue according to NIOSH?Name two factors of the RWL that could be improved to reduce risk.If the horizontal distance is reduced from 50 cm to 30 cm, how does the HM change and what effect would it have?arrow_forwardTwo complex values are z1=8 + 8i, z2=15 + 7 i. z1∗ and z2∗ are the complex conjugate values. Any complex value can be expessed in the form of a+bi=reiθ. Find r and θ for z1z2∗. Find r and θ for z1/z2∗? Find r and θ for (z1−z2)∗/z1+z2∗. Find r and θ for (z1−z2)∗/z1z2∗ Please explain all steps, Thank youarrow_forward
- An ac series circuit consists of a voltage source of frequency 60 Hz and voltage amplitude V, a 505-Ω resistor, and a capacitor of capacitance 7.2 μF. What must be the source voltage amplitude V for the average electrical power consumed in the resistor to be 236 W? There is no inductance in the circuit.arrow_forwardAn L−R−C series circuit has R= 280 Ω . At the frequency of the source, the inductor has reactance XLL= 905 Ω and the capacitor has reactance XC= 485 Ω . The amplitude of the voltage across the inductor is 445 V . What is the amplitude of the voltage across the resistor and the capacitor? What is the voltage amplitude of the source? What is the rate at which the source is delivering electrical energy to the circuit?arrow_forwardA 0.185 H inductor is connected in series with a 98.5 Ω resistor and an ac source. The voltage across the inductor is vL=−(12.5V)sin[(476rad/s)t]vL. Derive an expression for the voltage vR across the resistor. Express your answer in terms of the variables L, R, VL (amplitude of the voltage across the inductor), ω, and t. What is vR at 2.13 ms ? Please explain all stepsarrow_forward
- A worker lifts a box under the following conditions:Horizontal distance (H): 30 cmInitial height (V): 60 cmVertical travel (D): 50 cmTorso rotation (A): 30°Frequency: 3 times/minute for 1 hourGrip: Good Question:What is the RWL for this task?What does this value mean in terms of occupational safety?arrow_forwardCan someone helparrow_forwardCan someone help mearrow_forward
- 3. Four identical small masses are connected in a flat perfect square. Rank the relative rotational inertias (IA, IB, IC) about the three axes of rotation shown. Axes A and B are in the plane of the square, and axis C is perpendicular to the plane, through mass m1. ΙΑ IB m2 m1 m3 Ic m4 (a) IAarrow_forwardConsider the circuit shown in the figure below. (Assume L = 5.20 m and R2 = 440 Ω.) (a) When the switch is in position a, for what value of R1 will the circuit have a time constant of 15.4 µs? (b) What is the current in the inductor at the instant the switch is thrown to position b?arrow_forwardCan someone helparrow_forwardarrow_back_iosSEE MORE QUESTIONSarrow_forward_ios
- AstronomyPhysicsISBN:9781938168284Author:Andrew Fraknoi; David Morrison; Sidney C. WolffPublisher:OpenStaxStars and Galaxies (MindTap Course List)PhysicsISBN:9781337399944Author:Michael A. SeedsPublisher:Cengage Learning
- Foundations of Astronomy (MindTap Course List)PhysicsISBN:9781337399920Author:Michael A. Seeds, Dana BackmanPublisher:Cengage LearningStars and GalaxiesPhysicsISBN:9781305120785Author:Michael A. Seeds, Dana BackmanPublisher:Cengage LearningHorizons: Exploring the Universe (MindTap Course ...PhysicsISBN:9781305960961Author:Michael A. Seeds, Dana BackmanPublisher:Cengage Learning





