: Topic 1: Scientific Inquiry and Methodology Let’s proceed with the first 5 questions. Which of the following best represents the correct sequence of steps in the scientific method?

Observation → Hypothesis → Experiment → Conclusion

Hypothesis → Observation → Experiment → Conclusion

Experiment → Hypothesis → Observation → Conclusion

Conclusion → Experiment → Hypothesis → Observation

: Next, I will proceed to Section 2: Earth's Processes and Materials, beginning with the topic: Structure of the Earth (Questions 21–25). Ready to continue? Which of the following correctly lists Earth’s internal layers from the surface to the center?

Crust → Mantle → Outer Core → Inner Core

Crust → Inner Core → Outer Core → Mantle

Mantle → Crust → Outer Core → Inner Core

Crust → Mantle → Inner Core → Outer Core

: Which of the following best defines “climate”?

The average atmospheric conditions over a long period

The temperature on a specific day

The weather forecast for the week

: Which step comes first in the scientific method?

Identify the problem or ask a question

: Which of the following best defines climate?

Long-term patterns of temperature and precipitation in a region

Daily temperature and precipitation patterns

Wind direction at a specific time

Praxis Earth and Space Sciences (5572)

Free Praxis Earth and S 5572 Practice Questions

10 sample questions for the Praxis Earth and Space Sciences (5572), with the correct answer and an explanation for each. No account needed. Try each one before you open the answer.

Sections covered on the exam: Nature and Impact of Science and Engineering, Earth's Processes and Materials, Earth's Hydrosphere and Atmosphere, Astronomy.

Question 1 · Nature and Impact of Science and Engineering
:
Topic 1: Scientific Inquiry and Methodology
Let’s proceed with the first 5 questions.
Which of the following best represents the correct sequence of steps in the scientific method?
- A.Hypothesis → Observation → Experiment → Conclusion
- B.Experiment → Hypothesis → Observation → Conclusion
- C.Observation → Hypothesis → Experiment → Conclusion
- D.Conclusion → Experiment → Hypothesis → Observation
Show answer and explanation
Answer: C. Observation → Hypothesis → Experiment → Conclusion
The scientific method typically begins with observation, followed by forming a hypothesis, conducting an experiment, and finally reaching a conclusion based on the results.
Question 2 · Earth's Processes and Materials
:
Next, I will proceed to Section 2: Earth's Processes and Materials, beginning with the topic:
Structure of the Earth (Questions 21–25). Ready to continue?
Which of the following correctly lists Earth’s internal layers from the surface to the center?
- A.Crust → Inner Core → Outer Core → Mantle
- B.Mantle → Crust → Outer Core → Inner Core
- C.Crust → Mantle → Inner Core → Outer Core
- D.Crust → Mantle → Outer Core → Inner Core
Show answer and explanation
Answer: D. Crust → Mantle → Outer Core → Inner Core
Earth’s layers, starting from the surface inward, are: Crust, Mantle, Outer Core, and Inner Core. The crust is the thin outer shell, and the inner core is the dense, solid metal center.
Question 3 · Earth's Processes and Materials
:
Which of the following is considered a renewable natural resource?
- A.Coal
- B.Natural gas
- C.Uranium
- D.Wind
Show answer and explanation
Answer: D. Wind
Wind is a renewable resource because it is naturally replenished and does not deplete over time, unlike non-renewable resources such as coal or uranium.
Question 4 · Earth's Hydrosphere and Atmosphere
:
Which of the following best defines “climate”?
- A.The temperature on a specific day
- B.The average atmospheric conditions over a long period
- C.The change in seasons
- D.The weather forecast for the week
Show answer and explanation
Answer: B. The average atmospheric conditions over a long period
Climate refers to the long-term patterns of temperature, precipitation, humidity, and other weather conditions in a region, usually over 30 years or more.
Question 5 · Astronomy
:
What is the primary element that fuels stars during the main sequence phase?
- A.Hydrogen
- B.Carbon
- C.Helium
- D.Oxygen
Show answer and explanation
Answer: A. Hydrogen
During the main sequence phase of a star’s life, it primarily fuses hydrogen into helium through nuclear fusion, which powers the star.
Question 6 · Nature and Impact of Science and Engineering
:
Which step comes first in the scientific method?
- A.Analyze data
- B.Form a hypothesis
- C.Identify the problem or ask a question
- D.Conduct an experiment
Show answer and explanation
Answer: C. Identify the problem or ask a question
The first step in the scientific method is to observe and ask a question based on natural phenomena. This leads to hypothesis formulation and experimentation.
Question 7 · Earth's Processes and Materials
:
Which of the following layers is the outermost solid layer of Earth?
- A.Mantle
- B.Crust
- C.Inner core
- D.Outer core
Show answer and explanation
Answer: B. Crust
The crust is Earth’s outermost layer, where we live. It’s composed of continental and oceanic plates and is solid and relatively thin compared to other layers.
Question 8 · Earth's Processes and Materials
:
Which of the following is a renewable natural resource?
- A.Coal
- B.Solar energy
- C.Natural gas
- D.Petroleum
Show answer and explanation
Answer: B. Solar energy
Solar energy is renewable because it is naturally replenished by the Sun and can be harnessed continuously without depletion.
Question 9 · Earth's Hydrosphere and Atmosphere
:
Which of the following best defines climate?
- A.Short-term weather changes
- B.Long-term patterns of temperature and precipitation in a region
- C.Daily temperature and precipitation patterns
- D.Wind direction at a specific time
Show answer and explanation
Answer: B. Long-term patterns of temperature and precipitation in a region
Climate describes the average weather conditions over a long period, typically 30 years or more, in a specific area.
Question 10 · Astronomy
:
What determines the color of a star?
- A.Its surface temperature
- B.Its rotational speed
- C.Its distance from Earth
- D.Its shape
Show answer and explanation
Answer: A. Its surface temperature
A star’s color is directly related to its surface temperature. Blue stars are hotter, while red stars are cooler.

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