Which of the following provides evidence that Earth has changed over time?

• The presence of similar fossils on different continents

• The constant size of Earth's oceans

• The unchanging position of continents

• The uniform temperature across the planet

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TEKS.SCI.7.10A

What does the theory of plate tectonics explain?

• The formation of stars

• The movement of Earth's continents

• The cycle of the moon phases

• The process of photosynthesis

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TEKS.SCI.7.10A

Which of the following is an example of fossil evidence that supports the idea that Earth has changed over time?

• The discovery of coal deposits

• The presence of dinosaur bones in sedimentary rock layers

• The occurrence of volcanic eruptions

• The existence of mountain ranges

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TEKS.SCI.7.10A

Which of the following statements is true about the concept of superposition?

• It suggests that the youngest rock layers are at the bottom.

• It indicates that rock layers are always horizontal.

• It states that in undisturbed layers, the oldest rocks are at the bottom.

• It implies that all rock layers are the same age.

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TEKS.SCI.7.10A

Which of the following best describes how plate tectonics can lead to earthquakes?

• Plates moving apart create new ocean floor.

• Plates sliding past each other cause friction and stress.

• Plates colliding form mountain ranges.

• Plates remaining stationary cause no geological activity.

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TEKS.SCI.7.10A

What role do fossils play in understanding Earth's history?

• They provide evidence of past life and environmental conditions.

• They show the current climate of Earth.

• They indicate the future positions of continents.

• They reveal the exact age of Earth.

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TEKS.SCI.7.10A

Which of the following is NOT a result of plate tectonics?

• Formation of mountain ranges

• Creation of ocean basins

• Development of weather patterns

• Occurrence of earthquakes

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TEKS.SCI.7.10A

How does the concept of superposition help scientists determine the relative age of rock layers?

• By identifying the chemical composition of rocks

• By comparing the thickness of rock layers

• By observing that older layers are deeper than younger layers

• By measuring the temperature of rock layers

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TEKS.SCI.7.10A

What is the correct order of the rock layers from oldest to youngest?

• F, E, C, B, A, D
• A, B, C, D, E, F
• F, E, D, C, B, A
• D, F, E, C, B, A

New rock layers form on ​ (a)   of existing rock layers. Therefore, ​ (b)   rock layers are older than the layers above them

• top
• lower
• sedimentary
• bottom