Practice B.2 Greenhouse effect with authentic IB Physics exam questions for both SL and HL students. This question bank mirrors Paper 1A, 1B, 2 structure, covering key topics like mechanics, thermodynamics, and waves. Get instant solutions, detailed explanations, and build exam confidence with questions in the style of IB examiners.
A planet has albedo 0.25, emissivity 0.6, and solar constant .
Calculate the mean absorbed intensity.
Write the energy balance equation and estimate the surface temperature.
Outline the effect of increasing albedo on the temperature.
The Earth’s surface has a temperature of 288 K and emissivity 0.90.
Write the Stefan–Boltzmann law for intensity emitted by a grey body.
Calculate the intensity emitted by the surface.
The area of the surface is . Calculate the total power radiated.
A surface of area with emissivity 0.80 radiates
Define the term emissivity.
Calculate the surface temperature, assuming the surroundings are at 0 K.
The atmosphere of a certain planet allows of incoming solar radiation to pass through but absorbs of the outgoing infrared radiation from the surface. What effect does this have on the surface temperature of the planet?
Three energy sources for power stations are:
I. fossil fuel II. pumped water storage III. nuclear fuel
Which energy sources are primary sources?
The orbital radius of the Earth around the Sun is 1.5 times that of Venus. Solar constant is . What is the intensity of solar radiation at the orbital radius of Venus?
A planet has albedo 0.25, emissivity 0.6, and solar constant 1360 W/m².
Calculate the absorbed intensity.
Write the energy balance equation and solve for surface temperature.
Comment on the effect of increasing albedo on the temperature.
The average temperature of the surface of a planet is five times greater than the average temperature of the surface of its moon. The emissivities of the planet and the moon are the same. The average intensity radiated by the planet is . What is the average intensity radiated by its moon?
The intensity of sunlight reaching the top of Earth's atmosphere is . The albedo is 0.30.
Calculate the average intensity absorbed by Earth’s surface.
Write down the energy balance equation for equilibrium.
Calculate the equilibrium temperature of the Earth assuming a black body.
The three statements give possible reasons why an average value should be used for the solar constant.
I. The Sun's output varies during its 11 year cycle.
II. The Earth is in elliptical orbit around the Sun.
III. The plane of the Earth's spin on its axis is tilted to the plane of its orbit about the Sun.
Which are the correct reasons for using an average value for the solar constant?
Practice B.2 Greenhouse effect with authentic IB Physics exam questions for both SL and HL students. This question bank mirrors Paper 1A, 1B, 2 structure, covering key topics like mechanics, thermodynamics, and waves. Get instant solutions, detailed explanations, and build exam confidence with questions in the style of IB examiners.
A planet has albedo 0.25, emissivity 0.6, and solar constant .
Calculate the mean absorbed intensity.
Write the energy balance equation and estimate the surface temperature.
Outline the effect of increasing albedo on the temperature.
The Earth’s surface has a temperature of 288 K and emissivity 0.90.
Write the Stefan–Boltzmann law for intensity emitted by a grey body.
Calculate the intensity emitted by the surface.
The area of the surface is . Calculate the total power radiated.
A surface of area with emissivity 0.80 radiates
Define the term emissivity.
Calculate the surface temperature, assuming the surroundings are at 0 K.
The atmosphere of a certain planet allows of incoming solar radiation to pass through but absorbs of the outgoing infrared radiation from the surface. What effect does this have on the surface temperature of the planet?
Three energy sources for power stations are:
I. fossil fuel II. pumped water storage III. nuclear fuel
Which energy sources are primary sources?
The orbital radius of the Earth around the Sun is 1.5 times that of Venus. Solar constant is . What is the intensity of solar radiation at the orbital radius of Venus?
A planet has albedo 0.25, emissivity 0.6, and solar constant 1360 W/m².
Calculate the absorbed intensity.
Write the energy balance equation and solve for surface temperature.
Comment on the effect of increasing albedo on the temperature.
The average temperature of the surface of a planet is five times greater than the average temperature of the surface of its moon. The emissivities of the planet and the moon are the same. The average intensity radiated by the planet is . What is the average intensity radiated by its moon?
The intensity of sunlight reaching the top of Earth's atmosphere is . The albedo is 0.30.
Calculate the average intensity absorbed by Earth’s surface.
Write down the energy balance equation for equilibrium.
Calculate the equilibrium temperature of the Earth assuming a black body.
The three statements give possible reasons why an average value should be used for the solar constant.
I. The Sun's output varies during its 11 year cycle.
II. The Earth is in elliptical orbit around the Sun.
III. The plane of the Earth's spin on its axis is tilted to the plane of its orbit about the Sun.
Which are the correct reasons for using an average value for the solar constant?