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PAX Earth Science Flashcards

7 cards from real PAX practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 PAX Earth Science flashcards as text

  1. What is the correct order of Earth's layers from the surface to the center?

    Answer: Crust, Mantle, Outer Core, Inner Core

    Earth's layers from surface to center are: crust, mantle, outer core (liquid), and inner core (solid).

  2. What type of rock is formed when magma cools and solidifies?

    Answer: Igneous

    Igneous rock forms when magma (underground) or lava (at the surface) cools and solidifies.

  3. Which layer of Earth's atmosphere contains the ozone layer?

    Answer: Stratosphere

    The ozone layer is located in the stratosphere, approximately 15–35 km above Earth's surface, where it absorbs harmful UV radiation.

  4. What is the process called when water vapor cools and changes into liquid water?

    Answer: Condensation

    Condensation is the process by which water vapor loses energy and changes into liquid water, forming clouds or dew.

  5. What is the most abundant gas in Earth's atmosphere?

    Answer: Nitrogen

    Nitrogen (N₂) makes up approximately 78% of Earth's atmosphere, while oxygen accounts for about 21%.

  6. What type of plate boundary forms when two continental plates collide?

    Answer: Convergent boundary

    Convergent boundaries form when two plates move toward each other; colliding continental plates create mountain ranges like the Himalayas.

  7. Which process in the water cycle involves liquid water changing into water vapor?

    Answer: Evaporation

    Evaporation occurs when liquid water absorbs heat energy and transforms into water vapor, rising into the atmosphere.

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