Earth's Revolution and Seasons Worksheet

The Earth revolves around the Sun, resulting in the seasons we experience. Which statement below correctly matches the hemisphere, season, and the position of Earth relative to the Sun?

• The Northern Hemisphere experiences summer when it is pointed towards the Sun.

• The Northern Hemisphere experiences spring when it is pointed away from the Sun.

• The Southern Hemisphere experiences winter when it is pointed towards the Sun.

• The Southern Hemisphere experiences fall when it is pointed towards the Sun.

The Earth revolves around the Sun, resulting in the seasons we experience. Which statement below correctly matches the hemisphere, season, and the position of Earth relative to the Sun?

• The Northern Hemisphere experiences summer when it is pointed towards the Sun.

• The Northern Hemisphere experiences spring when it is pointed away from the Sun.

• The Southern Hemisphere experiences winter when it is pointed towards the Sun.

• The Southern Hemisphere experiences fall when it is pointed towards the Sun.

This passage appears on a government website. When they absorb the energy radiating from Earth’s surface, microscopic water or greenhouse gas molecules turn into tiny heaters— like the bricks in a fireplace, they radiate heat even after the fire goes out. They radiate in all directions. The energy that radiates back toward Earth heats both the lower atmosphere and the surface, enhancing the heating they get from direct sunlight. Based on this information, which activity is most likely to cause an increase in Earth’s surface temperature?

• littering, because this activity increases the amount of matter in landfills

• burning trash, because this activity adds heat energy to the atmosphere

• planting trees, because trees absorb greenhouse gasses

• burning fossil fuels, because this activity releases greenhouse gasses

Based on this information, which activity is most likely to cause an increase in Earth’s surface temperature?

• littering, because this activity increases the amount of matter in landfills

• burning trash, because this activity adds heat energy to the atmosphere

• planting trees, because trees absorb greenhouse gasses

• burning fossil fuels, because this activity releases greenhouse gasses

Using both the chart and the diagram, Amelia concluded that ice floats because it is less dense than water. Which statement provides a logical defense for Amelia's conclusion?

• When water becomes ice, its molecules spread farther apart, forming an open network with empty spaces.

• The density of water at its freezing point is greater than water at warmer temperatures.

• Because ice is colder than cold water, its molecules move even closer together in a fixed arrangement.

• When water freezes, the bonds between its molecules break, allowing them to separate.

Using both the chart and the diagram, Amelia concluded that ice floats because it is less dense than water. Which statement provides a logical defense for Amelia's conclusion?

• A) When water becomes ice, its molecules spread farther apart, forming an open network with empty spaces.

• B) The density of water at its freezing point is greater than water at warmer temperatures.

When tertiary consumers such as tuna and grouper, are frequently captured by fisherman, what impact does it have on the ocean ecosystem?

• It disrupts the balance of the ecosystem.

• It increases the population of tertiary consumers.

• It has no effect on the ecosystem.

• It causes primary producers to decrease.

When tertiary consumers such as tuna and grouper, are frequently captured by fisherman, what impact does it have on the ocean ecosystem?

• A) Smaller fish become more abundant and the food chain balance is disrupted.

• B) The number of fish in the ocean is so large that it has no impact.

• C) Tuna and grouper produce more offspring to increase their populations.

Some scientists predict that overfishing and habitat change may cause mass extinctions of Earth's marine species. Why are these human-caused changes potentially so dangerous to many species?

• These changes occur faster than many organisms can adapt.

• These changes affect the source of energy for the ecosystem.

• These changes prevent organisms from migrating.

• These changes are more artificial rather than natural events.

Some scientists predict that overfishing and habitat change may cause mass extinctions of Earth's marine species. Why are these human-caused changes potentially so dangerous to many species?

• These changes occur faster than many organisms can adapt.

• These changes affect the source of energy for the ecosystem.

• These changes prevent organisms from migrating.