Trivia Tussle

Shared trivia · science

Science: Days, Layers and Water

Six questions about planetary time, Earth’s layers and changes in water. Play this shared Trivia Tussle quiz in your browser and review your answers.

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science
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  1. Question 1: A Mars mission planner compares one rotation of Mars with one rotation of Earth. Which statement is closest?

    • Mars takes about a week
    • Mars takes about half as long
    • Mars takes almost twice as long
    • Both take about 24 hours, with Mars slightly longer

    Correct answer: Both take about 24 hours, with Mars slightly longer

    Mars rotates in about 24.6 hours, close to Earth’s roughly 24-hour rotation. A planet’s rotation sets its day; its trip around the Sun sets its year.

    Sources: NASA Science — Mars Facts

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  2. Question 2: If a rover waits through one complete Martian year, about how many Earth days pass?

    • 687
    • 365
    • 30
    • 88

    Correct answer: 687

    One orbit of Mars takes about 687 Earth days. That makes a Martian year much longer than an Earth year, even though their days have similar lengths.

    Sources: NASA Science — Mars Facts

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  3. Question 3: A plant uses sunlight to make sugars from carbon dioxide and water. Which gas is also produced?

    • Helium
    • Nitrogen
    • Oxygen
    • Argon

    Correct answer: Oxygen

    Photosynthesis stores solar energy in sugars and produces oxygen. Carbon dioxide is an input to this process; oxygen is one of its products.

    Sources: NASA Science — The Carbon Cycle

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  4. Question 4: Starting at Earth’s center and moving outward through the main layers, which sequence is correct?

    • Crust → mantle → outer core → inner core
    • Inner core → outer core → mantle → crust
    • Mantle → inner core → crust → outer core
    • Outer core → crust → inner core → mantle

    Correct answer: Inner core → outer core → mantle → crust

    Earth’s inner core sits inside the outer core. The mantle surrounds them, and the crust forms the thin outer rock layer beneath both land and ocean.

    Sources: NASA Science — Earth Facts

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  5. Question 5: Water vapor cools and becomes tiny liquid droplets in a cloud. What is that change called?

    • Condensation
    • Evaporation
    • Sublimation
    • Melting

    Correct answer: Condensation

    Condensation changes water from gas to liquid. In the atmosphere, the resulting droplets can gather into clouds; becoming a cloud droplet is different from falling as precipitation.

    Sources: NASA Science — The Water Cycle

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  6. Question 6: Sunlight warms a lake and water leaves its surface as vapor. Which process is happening?

    • Freezing
    • Condensation
    • Precipitation
    • Evaporation

    Correct answer: Evaporation

    Evaporation moves water from a liquid surface into the air as gas. Condensation runs the phase change the other way, turning vapor into liquid droplets.

    Sources: NASA Science — The Water Cycle

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