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Science Physical Science Flashcards

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

Read the first 7 Science Physical Science flashcards as text

  1. An element has an atomic number of 6 and a mass number of 12. How many neutrons are in the nucleus?

    Answer: 6

    Neutrons = mass number − atomic number = 12 − 6 = 6.

  2. A 10 N force is applied to a 2 kg object. What is the object's acceleration?

    Answer: 5 m/s²

    Using Newton's second law, F = ma, so a = F/m = 10/2 = 5 m/s².

  3. Which of the following electromagnetic waves has the highest frequency?

    Answer: X-rays

    X-rays have a much higher frequency (and shorter wavelength) than radio waves, microwaves, or visible light.

  4. In a series circuit with a 12 V battery and two 3-ohm resistors, what is the total current?

    Answer: 2 A

    Total resistance = 3 + 3 = 6 ohms; I = V/R = 12/6 = 2 A by Ohm's Law.

  5. Which statement correctly describes the relationship between mass and weight?

    Answer: Mass stays constant, but weight changes depending on gravitational pull

    Mass is the amount of matter in an object and never changes; weight is the gravitational force on that mass and varies by location.

  6. During which type of nuclear reaction are large atomic nuclei split into smaller ones?

    Answer: Fission

    Nuclear fission involves splitting a heavy nucleus into smaller fragments, releasing large amounts of energy.

  7. A wave has a frequency of 5 Hz and a wavelength of 2 meters. What is the wave's speed?

    Answer: 10 m/s

    Wave speed = frequency × wavelength = 5 Hz × 2 m = 10 m/s.