PSSA Earth and Space Science Flashcards
6 cards from real PSSA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 PSSA Earth and Space Science flashcards as text
Which of the following best describes the rock cycle?
Answer: The continuous transformation of rocks from one type to another over time
The rock cycle describes the continuous processes by which rocks transform between igneous, sedimentary, and metamorphic types over long periods.
What is the difference between a star and a planet?
Answer: Stars produce their own light through nuclear fusion; planets do not
Stars generate their own light and energy through nuclear fusion reactions in their cores, while planets reflect the light of the star they orbit.
What is the primary cause of wind?
Answer: Differences in air pressure caused by uneven heating of Earth's surface
Wind is caused by differences in air pressure; air moves from areas of high pressure to areas of low pressure, creating wind.
What is a galaxy?
Answer: A vast system of stars, gas, and dust held together by gravity
A galaxy is a massive system containing billions of stars, along with gas, dust, and dark matter, all held together by gravity.
What is the ozone layer's primary function?
Answer: It shields Earth from harmful ultraviolet (UV) radiation from the Sun
The ozone layer in the stratosphere absorbs most of the Sun's harmful ultraviolet radiation, protecting life on Earth.
What is metamorphic rock?
Answer: Rock that has been transformed by heat and pressure
Metamorphic rock forms when existing rocks are subjected to intense heat and pressure, changing their mineral composition and structure.