AP Environmental Science Practice Quiz: Solar Radiation and Earth's Seasons

Written by AP Content Team, Verified for 2026 AP Exams, Last updated: May 2026

Test your understanding with short quizzes. This quiz has 12 questions to check your progress.

Question 1 of 12

According to the provided text, what is the Earth's main source of energy?

A)Geothermal heat from the planet's coreB)Incoming solar radiation (insolation)C)Tidal forces generated by the moonD)Radioactive decay within the Earth's crust

All Questions (12)

According to the provided text, what is the Earth's main source of energy?

A) Geothermal heat from the planet's core

B) Incoming solar radiation (insolation)

C) Tidal forces generated by the moon

D) Radioactive decay within the Earth's crust

Correct Answer: B

The text explicitly states that 'Incoming solar radiation (insolation) is the Earth's main source of energy'.

Which of the following is identified as the primary cause of Earth's seasons?

A) The variation in distance between the Earth and the sun

B) The tilt of Earth's axis of rotation

C) The cyclical changes in the sun's energy output

D) The speed of the Earth's revolution around the sun

Correct Answer: B

The content specifies that 'The tilt of Earth's axis of rotation causes the Earth's seasons'.

The intensity of solar radiation received at a particular location on Earth is determined by the:

A) altitude of the location.

B) angle of the sun's rays.

C) proximity to large bodies of water.

D) composition of the atmosphere.

Correct Answer: B

The text states, 'The angle of the sun's rays determines the intensity of the solar radiation.'

Based on the provided information, which of the following describes the general pattern of solar radiation distribution on Earth?

A) It is highest at the poles and decreases towards the equator.

B) It is highest at the equator and decreases toward the poles.

C) It is distributed evenly across all latitudes.

D) It is highest in the mid-latitudes and lowest at the tropics.

Correct Answer: B

The content clearly states, 'The highest solar radiation per unit area is received at the equator and decreases toward the poles.'

A location on Earth receives the most intense solar radiation when the sun's rays are:

A) at a low angle, just above the horizon.

B) scattered by clouds and atmospheric particles.

C) directly horizontal to the surface.

D) traveling the longest path through the atmosphere.

Correct Answer: C

The text specifies that 'The latitude that is directly horizontal to the solar radiation receives the most intensity.' 'Directly horizontal' in this context means perpendicular to the surface (sun directly overhead).

Incoming solar radiation (insolation) at any given location on Earth's surface is dependent on which two main factors?

A) Longitude and altitude

B) Ocean currents and wind patterns

C) Season and latitude

D) Earth's rotational speed and magnetic field

Correct Answer: C

The text states that insolation 'is dependent on season and latitude.'

For a city in the Northern Hemisphere, on which day would the amount of solar radiation received per unit area be at its minimum?

A) The spring equinox

B) The longest summer day

C) The autumnal equinox

D) The shortest winter day

Correct Answer: D

The content states that the least solar radiation is received 'on the shortest winter day.' This is due to a combination of fewer daylight hours and a lower sun angle, both caused by the Earth's tilt.

What is the fundamental reason for the number of daylight hours changing throughout the year at a specific location?

A) The Earth's elliptical orbit, which changes its distance from the sun.

B) The tilt of the Earth's axis of rotation relative to its orbital plane.

C) The gravitational influence of other planets in the solar system.

D) The daily rotation of the Earth on its axis.

Correct Answer: B

The text directly attributes the 'number of hours of daylight in a particular location on the Earth's surface' to 'The tilt of Earth's axis of rotation'.

Why does a location at 70° N latitude receive less intense solar radiation than a location at 20° N latitude?

A) The location at 70° N is always significantly farther from the sun.

B) The sun's rays strike the surface at a more oblique angle at 70° N.

C) The atmosphere is thinner at 20° N, allowing more radiation to pass through.

D) The Earth's rotation is slower at 70° N, reducing energy absorption.

Correct Answer: B

This question combines two concepts from the text. Solar radiation decreases toward the poles (Content 4) because the angle of the sun's rays becomes less direct, or more oblique, which reduces the intensity (Content 3).

According to the text, the solar radiation received at a location on Earth's surface varies seasonally. When would a location in Australia (Southern Hemisphere) receive the most solar radiation?

A) On its shortest winter day (around June 21st).

B) On its longest summer day (around December 21st).

C) During its autumnal equinox (around March 20th).

D) The amount of radiation is the same every day of the year.

Correct Answer: B

The text establishes the principle that 'the most radiation received during the location's longest summer day.' For the Southern Hemisphere, the longest summer day occurs in December.

Which statement best describes the relationship between Earth's seasons and the number of daylight hours, based on the provided text?

A) The changing number of daylight hours is the primary cause of the Earth's seasons.

B) The Earth's seasons are the primary cause of the changing number of daylight hours.

C) Both the seasons and the varying number of daylight hours are effects of the tilt of Earth's axis.

D) There is no direct relationship between the Earth's seasons and the number of daylight hours.

Correct Answer: C

The text states that 'The tilt of Earth's axis of rotation causes the Earth's seasons and the number of hours of daylight'. This indicates that the tilt is the single cause for both phenomena, making them related effects.

The provided text explains how the sun's energy, in the form of insolation, affects which part of the Earth?

A) The liquid outer core

B) The magnetic field

C) The Earth's surface

D) The rate of tectonic plate movement

Correct Answer: C

The first point of the content is to 'Explain how the sun's energy affects the Earth's surface,' and subsequent points discuss solar radiation received at the surface.