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Grade 8 Gravity & Orbits Worksheet with Answers
Grade 8 (US) · Year 9 (UK) · Class 8 (India) · Science
Unit 2: Forces & MotionGravityNGSS MS-PS2-4
How mass and distance affect gravity, and how gravity shapes orbits and the solar system. This free middle school worksheet has 9 questions and a full answer key. Print it or save it as a PDF — every answer is checked by code, not guessed.
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Practice Sheetaethelsystems.comGravity & Orbits
Grade 8 · Science
Name
Class
Date
Learning goal: Gravity · NGSS MS-PS2-4
Directions: This worksheet has 2 parts. Read the instructions at the start of each part.
RememberDay, year and seasons
Match each clue to the right word. Write the letter in the box.
- 1Which has more gravity: Earth or the moon?
- 2What pulled gas and dust together to form the solar system?
- 3Which planet has the strongest gravity in our solar system?
- 4What shape are planetary orbits?
- 5What is the path of a planet around the sun called?
- AGravity
- BEllipses
- CJupiter
- DOrbit
- EEarth
Answer each question. Use full sentences where you can.
- 6
If two objects move farther apart, does gravity get stronger or weaker?
StrongerWeaker - 7
What two things affect the strength of gravity between objects?
- 8
Why do astronauts in the space station seem weightless?
- 9
What force keeps planets in orbit around the sun?
★ Challenge corner for fast finishers
Does a kilogram of feathers weigh more than a kilogram of iron?
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Teacher's comments
Free printable worksheets with answer keys · aethelsystems.com/worksheets/science/8/gravity_orbits
Answer key — Gravity & Orbits (Grade 8)
- 1.E — Earth
- 2.A — gravity
- 3.C — Jupiter
- 4.B — ellipses (slightly oval)
- 5.D — an orbit
- 6.weaker
- 7.their masses and the distance between them
- 8.they are falling around Earth (in free fall) with the station
- 9.gravity
- ★no — they weigh the same
Answer key (click to show)
- 1.E — Earth
- 2.A — gravity
- 3.C — Jupiter
- 4.B — ellipses (slightly oval)
- 5.D — an orbit
- 6.weaker
- 7.their masses and the distance between them
- 8.they are falling around Earth (in free fall) with the station
- 9.gravity
- ★no — they weigh the same (challenge corner)
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