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WorksheetsPhysical Science EOG GMAS Study Guide Questions
Total questions: 18
Worksheet time: 36mins
The half-life of cadmium-109 is 464 days. A scientist measures out a 256.0 gram (g) sample. Approximately how many grams of cadmium-109 would remain after 1,392 days?
A. 32.0 g
B. 64.0 g
C. 2,048.0 g
D. 1,024.0 g
The elements neon and argon are not reactive. Which hypothesis BEST explains this?
A. They are not stable atoms.
B. They are not readily available on Earth.
C. They tend to give up all of their valence electrons easily.
D. They have the maximum possible number of electrons in their outermost shell.
A group of students proposed four different models to show the fusion of hydrogen to form helium. The key to the models is shown. Which model shows the process of nuclear fusion?
Model A
Model B
Model C
Model D
A student is modeling the fission of uranium nuclei. The student started the model as shown in the diagram. Which TWO particles should the student add to the right-hand side of the model to complete the fission reaction?
Proton
Neutron
Atomic Nucleus
Gamma Rays
A student is modeling the units in the formula for aluminum sulfide using the spheres shown below to represent aluminum (Al) and sulfur (S) atoms. Which model correctly shows a stable ionic compound for aluminum sulfide?
S¹⁻, S¹⁻, Al³⁺
S²⁻, S²⁻, S²⁻, Al³⁺, Al³⁺
Al¹⁺, S¹⁻
S³⁻, S³⁻, Al³⁺, Al³⁺, Al³⁺
Use the chemical equation provided to answer the question. What coefficients of Fe, O₂, and Fe₂O₃ will show that matter is conserved in this chemical reaction?
2, 1, 2
2, 3, 2
4, 1, 2
4, 3, 2
According to the graph showing the solubility of potassium nitrate (KNO3) in water as a function of temperature, what is the maximum approximate mass of KNO3 that would dissolve at 60°C and what is the relationship between temperature and solubility?
The mass is approximately 140 g; increased temperatures lead to a decrease in solubility.
The mass is approximately 110 g; increased temperatures lead to an increase in solubility.
The mass is approximately 140 g; increased temperatures lead to an increase in solubility.
The mass is approximately 110 g; increased temperatures lead to a decrease in solubility.
Based on the predicted dissolving times for trials 1, 3, and 4, which statement contains the BEST prediction for the dissolving time in trial 2?
5 minutes, because the larger diameter of crystals increases the total surface area of the solute exposed to the solvent, decreasing the length of exposure to the solvent
15 minutes, because the larger diameter of crystals increases the total surface area of the solute exposed to the solvent, increasing the length of exposure to the solvent
20 minutes, because the larger diameter of crystals decreases the total surface area of the solute exposed to the solvent, but the length of exposure to the solvent stays the same
30 minutes, because the larger diameter of crystals decreases the total surface area of the solute exposed to the solvent, increasing the length of exposure to the solvent
How should the student design investigation 3 to finish testing the factors that affect the dissolving rate of KCl?
Increase the diameter of crystals to 2.0 mm. Keep the temperature at 40°C. Do not stir the solution.
Keep the diameter of crystals at 1.0 mm. Keep the temperature at 20°C. Stir the solution.
Increase the diameter of crystals to 4.0 mm. Decrease the temperature to 0°C. Do not stir the solution.
Keep the diameter of crystals at 1.0 mm. Increase the temperature to 60°C. Stir the solution.
Which action should the student take in step 3 to determine the speed of the car, and which analysis of the speed of the car is correct?
A student pulls a lever down 4 m. The lever lifts a box that weighs 20 N up a distance of 2 m. How much work was done on the box?
A. 10 J
B. 40 J
C. 80 J
D. 160 J
Refer to the diagram titled "Heating Curves for One Gram of Acetic Acid and One Gram of Water". What is happening to the acetic acid between points X and Y on the graph?
Liquid acetic acid is becoming warmer as it absorbs heat energy from the surroundings.
Liquid acetic acid is being converted from a liquid to a gas by absorbing heat energy from the surroundings.
Solid acetic acid is becoming warmer as it absorbs heat energy from the surroundings.
Solid acetic acid is being converted from a solid to a liquid by absorbing heat energy from the surroundings.
A student drew models of an electromagnetic wave and a water wave. Which scientific question did the student MOST LIKELY ask to know how to draw these models?
Are water waves and electromagnetic waves examples of transverse waves?
Do water waves travel at a slower speed than electromagnetic waves?
Can water waves and electromagnetic waves travel through different media?
How do water waves and electromagnetic waves increase their amplitude?
The table compares data for two different light-emitting diodes (LEDs). Based on the data, what can be identified about the energy of the waves emitted by the LEDs?
The wave energy of the green diffused LED is 1.65 times that of the gallium arsenide LED.
The wave energy of the green diffused LED is 0.333 times that of the gallium arsenide LED.
The wave energy of the green diffused LED is 0.608 times that of the gallium arsenide LED.
The wave energy of the green diffused LED is 3.00 times that of the gallium arsenide LED.
A student is investigating the differences between light waves and sound waves by using a capsule filled with solid glass at one end and a vacuum at the other end. The student will transmit waves into the capsule at a 30° angle to the normal centerline. Which TWO questions should the student ask, and which predictions are MOST LIKELY correct based on this investigation?
Can electromagnetic waves and mechanical waves travel from a solid glass medium into a liquid medium? Prediction: Both electromagnetic waves and mechanical waves will bend, showing that they have passed through each medium.
How is the speed of electromagnetic waves affected when traveling from a solid glass medium to a vacuum at a 30° angle? Prediction: The electromagnetic waves will travel in a straight line, showing that they have maintained a constant speed.
How are electromagnetic waves and mechanical waves affected when traveling from a solid glass medium to a vacuum? Prediction: The electromagnetic waves and mechanical waves will continue through the vacuum at a constant speed.
Can electromagnetic waves and mechanical waves travel from a solid glass medium into a liquid medium? Prediction: The electromagnetic waves will continue through the liquid medium, while the mechanical waves will go no farther.
How are electromagnetic waves and mechanical waves affected when traveling from a solid glass medium to a vacuum? Prediction: The electromagnetic waves will continue through the vacuum, while the mechanical waves will go no farther.
Which model shows a circuit where the current flowing through each bulb will be the same as the current at point X?
Option A
Option B
Option C
Option D
If the steel sphere has the same initial velocity in both trials, which action would BEST help to achieve the motion of the steel sphere shown in trial 2?
putting a resistor between the battery and switch
replacing the nail with one made out of aluminum
reversing the direction of the poles of the iron core
increasing the number of coils of insulated copper wire
A parallel circuit contains a battery with a voltage of 9 volts. The total resistance in the circuit is 18 ohms. Which claim about the current in the circuit can be supported mathematically from the relationships between voltage, current, and resistance?
the current flowing through the circuit is 0.5 amps because current is related to voltage and resistance by the formula I = V/R
the current flowing through the circuit is 2 amps because current is related to voltage and resistance by the formula I = R/V
the current flowing through the circuit is 27 amps because current is related to voltage and resistance by the formula I = R + V
the current flowing through the circuit is 162 amps because current is related to voltage and resistance by the formula I = VR
