Stanford Achievement Environment and Earth Science Flashcards
6 cards from real Stanford 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 6 Stanford Achievement Environment and Earth Science flashcards as text
What type of rock is formed from cooled magma or lava?
Answer: Igneous
Igneous rock forms when magma (underground) or lava (above ground) cools and solidifies.
What is the main cause of seasons on Earth?
Answer: Earth's tilted axis as it orbits the sun
Earth's seasons are caused by its tilted axis (23.5°), which causes different parts of Earth to receive varying amounts of sunlight throughout the year.
Which gas makes up the largest percentage of Earth's atmosphere?
Answer: Nitrogen
Nitrogen makes up approximately 78% of Earth's atmosphere, while oxygen accounts for about 21%.
What is the greenhouse effect?
Answer: The process by which gases trap heat in Earth's atmosphere
The greenhouse effect occurs when greenhouse gases like carbon dioxide trap heat from the sun in Earth's atmosphere, warming the planet.
What is a food chain?
Answer: A sequence showing how energy passes from one organism to another
A food chain shows the flow of energy from producers (plants) through consumers (animals) in a sequential order.
What is pollution?
Answer: The introduction of harmful substances into the environment
Pollution is the introduction of harmful or poisonous substances into the natural environment, damaging air, water, or soil.
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