How would the seasons be different if Earth were not tilted on its axis? Explain.

a. What causes the seasons? b. What are solstices and equinoxes? How are they related to the seasons? c. How would the seasons be different if Earth were not tilted on its axis?

$\text{\red{Apply Concepts}}$ Based on the relative positions of the sun and Earth, explain why Earth has climate zones and seasons.

Predict How would the seasons be different if Earth were not tilted on its axis? Explain.

How would Earth's climate be different if its rotational axis were not tilted?

Use the AC-3 algorithm to show that arc consistency can detect the inconsistency of the partial assignment {WA = green, V = red} for the problem shown in Figure 6.1.

How would global climate be affected if Earth were not tilted on its axis?

Applying Ideas How would seasons be different if Earth was not tilted on its axis?

What is the tilt of the Earth at the equator?

a. What are the two major motions of Earth as it travels through space? b. Which motion causes day and night?

Which accurately describes Earth's position and orientation during summer in the northern hemisphere? A. Earth is at its closest point to the Sun. B. Earth's hemispheres receive equal amounts of solar energy. C. The north end of Earth's rotational axis leans toward the Sun. D. The Sun emits a greater amount of light and heat energy.

During one lunar cycle, the Moon A. completes its east-to-west path across the sky exactly once. B. completes its entire sequence of phases. C. progresses only from the new moon phase to the full moon phase. D. revolves around Earth twice.

Which of the following statements about the principle of superposition are true? Choose all that apply. a. Older rock layers are found on top of younger rock layers. b. Rocks that are cut by a fault or intrusion are younger than the fault or intrusion. c. Layers of sediment, lava, and ash are deposited on top of each other. d. Older rock layers are found below younger rock layers.

Which of the following describes energy and matter in ecosystems? A. Both energy and matter are completely recycled. B. Matter recycles, but some energy is transferred. C. Energy is recycled, but most matter is lost. D. Both matter and energy are completely lost.