Earth Science Worksheet - WordMint - Free Printable
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Step-by-step solution for: Earth Science Worksheet - WordMint
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Show Answer Key & Explanations
Step-by-step solution for: Earth Science Worksheet - WordMint
Here is the correct matching of each definition (numbered 1–19) with its corresponding term (lettered A–S), along with a clear explanation for each match.
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1. the way an object APPEARS to move → K. apparent motion
*Explanation:* Apparent motion is the perceived movement of an object that may not actually be moving relative to you — for example, stars appearing to move across the sky due to Earth’s rotation.
2. plant material and animal waste used as FUEL → R. biomass
*Explanation:* Biomass refers to organic materials (like wood, crop residues, or manure) that can be burned or processed to produce energy.
3. electricity produced by the ENERGY in moving water → A. hydroelectric power
*Explanation:* Hydroelectric power is generated when flowing or falling water turns turbines connected to generators.
4. The SMALLEST piece of matter → P. atom
*Explanation:* An atom is the smallest unit of an element that retains its chemical properties; it’s made of protons, neutrons, and electrons.
5. a planet that does NOT have a clear orbit → L. dwarf planet
*Explanation:* Dwarf planets (like Pluto) orbit the Sun but have not cleared their orbital neighborhood of other debris, so they don’t meet the full criteria for “planet.”
6. one-HALF of Earth’s surface → G. hemisphere
*Explanation:* Hemisphere literally means “half-sphere.” Earth is divided into Northern/Southern and Eastern/Western hemispheres.
7. a star SYSTEM that contains large groups of stars → S. galaxy
*Explanation:* A galaxy is a massive system of stars, gas, dust, and dark matter bound together by gravity — e.g., the Milky Way.
8. any fuel that formed from the REMAINS of plants and animals that lived millions of years ago → D. fossil fuel
*Explanation:* Fossil fuels (coal, oil, natural gas) are formed from ancient organic matter compressed over millions of years.
9. the BLOCKING of light shining from one object in space onto another → E. eclipse
*Explanation:* An eclipse occurs when one celestial body moves into the shadow of another — e.g., solar eclipse (Moon blocks Sun) or lunar eclipse (Earth blocks Sun from Moon).
10. a LARGE rocky object that orbits a planet → H. moon
*Explanation:* Moons (or natural satellites) are celestial bodies that orbit planets — e.g., Earth’s Moon, Jupiter’s Ganymede.
11. EVERYTHING that exists throughout space → N. universe
*Explanation:* The universe includes all matter, energy, space, time, galaxies, stars, planets — everything that exists.
12. materials that are always being REPLACED and will not run out → J. renewable resource
*Explanation:* Renewable resources (like solar, wind, or biomass) can be replenished naturally within a human timescale.
13. the presence of substances that are HARMFUL to the environment or living things → B. pollution
*Explanation:* Pollution refers to the introduction of contaminants into the environment that cause adverse effects.
14. the act of moving AROUND another object → M. revolution
*Explanation:* Revolution is the motion of one object orbiting around another — e.g., Earth revolves around the Sun.
15. the act of SPINNING around → O. rotation
*Explanation:* Rotation is spinning on an axis — e.g., Earth rotates once every 24 hours, causing day and night.
16. resources that CANNOT be replaced quickly enough to keep from running out → Q. nonrenewable resources
*Explanation:* Nonrenewable resources (like coal, oil, uranium) take millions of years to form and deplete faster than they regenerate.
17. a ball of hot gases that give off LIGHT and other types of energy → I. star
*Explanation:* Stars (like our Sun) are massive spheres of plasma that emit light and heat through nuclear fusion.
18. the PATH one object takes around another → C. orbit
*Explanation:* Orbit is the curved path that one object follows around another due to gravity — e.g., Earth’s orbit around the Sun.
19. a large nearly round object in space that ORBITS a star → F. planet
*Explanation:* A planet is a celestial body that orbits a star, is nearly round, and has cleared its orbital path — e.g., Earth, Mars, Jupiter.
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✔ Final Answer Key:
1. K
2. R
3. A
4. P
5. L
6. G
7. S
8. D
9. E
10. H
11. N
12. J
13. B
14. M
15. O
16. Q
17. I
18. C
19. F
Let me know if you’d like this formatted as a worksheet answer key!
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1. the way an object APPEARS to move → K. apparent motion
*Explanation:* Apparent motion is the perceived movement of an object that may not actually be moving relative to you — for example, stars appearing to move across the sky due to Earth’s rotation.
2. plant material and animal waste used as FUEL → R. biomass
*Explanation:* Biomass refers to organic materials (like wood, crop residues, or manure) that can be burned or processed to produce energy.
3. electricity produced by the ENERGY in moving water → A. hydroelectric power
*Explanation:* Hydroelectric power is generated when flowing or falling water turns turbines connected to generators.
4. The SMALLEST piece of matter → P. atom
*Explanation:* An atom is the smallest unit of an element that retains its chemical properties; it’s made of protons, neutrons, and electrons.
5. a planet that does NOT have a clear orbit → L. dwarf planet
*Explanation:* Dwarf planets (like Pluto) orbit the Sun but have not cleared their orbital neighborhood of other debris, so they don’t meet the full criteria for “planet.”
6. one-HALF of Earth’s surface → G. hemisphere
*Explanation:* Hemisphere literally means “half-sphere.” Earth is divided into Northern/Southern and Eastern/Western hemispheres.
7. a star SYSTEM that contains large groups of stars → S. galaxy
*Explanation:* A galaxy is a massive system of stars, gas, dust, and dark matter bound together by gravity — e.g., the Milky Way.
8. any fuel that formed from the REMAINS of plants and animals that lived millions of years ago → D. fossil fuel
*Explanation:* Fossil fuels (coal, oil, natural gas) are formed from ancient organic matter compressed over millions of years.
9. the BLOCKING of light shining from one object in space onto another → E. eclipse
*Explanation:* An eclipse occurs when one celestial body moves into the shadow of another — e.g., solar eclipse (Moon blocks Sun) or lunar eclipse (Earth blocks Sun from Moon).
10. a LARGE rocky object that orbits a planet → H. moon
*Explanation:* Moons (or natural satellites) are celestial bodies that orbit planets — e.g., Earth’s Moon, Jupiter’s Ganymede.
11. EVERYTHING that exists throughout space → N. universe
*Explanation:* The universe includes all matter, energy, space, time, galaxies, stars, planets — everything that exists.
12. materials that are always being REPLACED and will not run out → J. renewable resource
*Explanation:* Renewable resources (like solar, wind, or biomass) can be replenished naturally within a human timescale.
13. the presence of substances that are HARMFUL to the environment or living things → B. pollution
*Explanation:* Pollution refers to the introduction of contaminants into the environment that cause adverse effects.
14. the act of moving AROUND another object → M. revolution
*Explanation:* Revolution is the motion of one object orbiting around another — e.g., Earth revolves around the Sun.
15. the act of SPINNING around → O. rotation
*Explanation:* Rotation is spinning on an axis — e.g., Earth rotates once every 24 hours, causing day and night.
16. resources that CANNOT be replaced quickly enough to keep from running out → Q. nonrenewable resources
*Explanation:* Nonrenewable resources (like coal, oil, uranium) take millions of years to form and deplete faster than they regenerate.
17. a ball of hot gases that give off LIGHT and other types of energy → I. star
*Explanation:* Stars (like our Sun) are massive spheres of plasma that emit light and heat through nuclear fusion.
18. the PATH one object takes around another → C. orbit
*Explanation:* Orbit is the curved path that one object follows around another due to gravity — e.g., Earth’s orbit around the Sun.
19. a large nearly round object in space that ORBITS a star → F. planet
*Explanation:* A planet is a celestial body that orbits a star, is nearly round, and has cleared its orbital path — e.g., Earth, Mars, Jupiter.
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✔ Final Answer Key:
1. K
2. R
3. A
4. P
5. L
6. G
7. S
8. D
9. E
10. H
11. N
12. J
13. B
14. M
15. O
16. Q
17. I
18. C
19. F
Let me know if you’d like this formatted as a worksheet answer key!
Parent Tip: Review the logic above to help your child master the concept of earth science printable worksheet.
