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Standardized Achievement Science Flashcards

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

Read the first 7 Standardized Achievement Science flashcards as text

  1. Which layer of the atmosphere contains the ozone layer that protects Earth from ultraviolet radiation?

    Answer: Stratosphere

    The ozone layer is located in the stratosphere, roughly 15–35 km above Earth's surface.

  2. A student measures the mass of a rock as 50 g and its volume as 25 cm³. What is its density?

    Answer: 2 g/cm³

    Density = mass ÷ volume = 50 g ÷ 25 cm³ = 2 g/cm³.

  3. Which type of rock is formed when molten magma cools and solidifies?

    Answer: Igneous

    Igneous rocks form from the cooling and crystallization of magma or lava.

  4. What is the role of decomposers in an ecosystem?

    Answer: Break down dead organisms and return nutrients to the soil

    Decomposers such as bacteria and fungi break down dead organic matter, recycling nutrients back into the environment.

  5. Which organelle is responsible for producing energy (ATP) in a cell?

    Answer: Mitochondria

    Mitochondria carry out cellular respiration to produce ATP, the cell's main energy currency.

  6. A ball is dropped from rest. Which force causes it to accelerate downward?

    Answer: Gravity

    Gravity pulls the ball toward Earth's center, causing downward acceleration of approximately 9.8 m/s².

  7. What does a plant use during photosynthesis to produce glucose?

    Answer: Carbon dioxide and water

    Photosynthesis combines CO₂ and H₂O using light energy to produce glucose and oxygen.