Grade 11 Earth and Life Science 1st Quarter Exam

Which of the following best supports the claim that gravity is the primary force responsible for the formation of a star?

• Stars shine because fusion reactions occur in their cores.

• Gas particles in space randomly collide and form energy.

• Gravity pulls gas and dust inward, forming a protostar.

• Magnetic forces move particles that give off some light.

If a major forest fire affects a large area of land, which hypothesis best explains how this event might influence interactions among Earth’s subsystems?

• Water from oceans evaporates and enters the atmosphere as vapor.

• Plants take nutrients from soil and use them to make food.

• Tides occur when the Moon’s gravity pulls ocean waters upward.

• Volcanic eruptions send gases into the atmosphere and affect air.

Which of the following statements presents information that is not directly related to current advancements in solar system research?

• NASA plans future missions to explore moons of Jupiter and Saturn.

• New telescopes help scientists observe distant planets in detail.

• Mercury is the closest planet to the Sun and has no atmosphere.

• Mars rovers collect rock samples to search for ancient life signs.

Which of the following best explains the type of information needed to correctly answer the question: "What causes the seasons on Earth?"

• A calendar showing dates of holidays throughout the year.

• A diagram showing Earth’s tilt and orbit around the Sun.

• A list of temperatures recorded in different countries.

• A table showing the time of sunrise and sunset each day.

If a large forest fire occurs, which hypothesis best explains how it may affect Earth’s subsystems?

• The fire may change climate by sending smoke into the sky.

• The fire may harm soil, plants, and release gas to the air.

• The fire may kill animals and trees but not harm the land.

• The fire may only affect plants and will leave air the same.

Which of the following conditions on Earth is most directly associated with its ability to support life, setting it apart from other planets in the solar system?

• Its distance from the Sun allows moderate surface temperatures.

• It has more mountains and valleys than other planets.

• Its surface is covered mostly by hard, solid rock.

• It rotates faster than most other planets in the solar system.

Which of the following best classifies as a technological advancement in exploring the solar system?

• Jupiter has the most moons of any planet in the solar system.

• The James Webb telescope captures clearer images of planets.

• Saturn is made mostly of hydrogen and has large ring systems.

• Neptune has strong winds and a very cold atmospheric layer.

Which of the following statements does not relate to a contribution that advanced our understanding of Earth systems?

• James Hutton proposed that Earth's surface changes slowly over time.

• Alfred Wegener introduced the theory of continental drift in geology.

• Galileo designed a telescope that observed moons orbiting planets.

• Rachel Carson wrote about pesticide effects on ecosystems and health.

Which of the following best classifies as a scientific contribution to Earth systems science?

• Charles Darwin sailed to Galápagos to study evolution in species.

• Rachel Carson revealed how pollution harms natural ecosystems.

• Stephen Hawking studied black holes and the nature of the universe.

• Johannes Kepler described the motion of planets in the solar system.

Your team originally thought that all magma in the region came from a single mantle source. After analyzing rocks from a composite volcano, you find they have higher silica and gas content than granite. How should this new information be used to revise your hypothesis about the magma’s origin?

• Conclude that the magma formed at a mid-ocean ridge where pressure is low.

• Suggest that the magma interacted with continental crust while rising, changing its composition.

• Assume the magma cooled slowly underground, which reduced its silica and gas content.

• Propose that the magma mixed with oceanic crust, forming basaltic lava with low gas levels.