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Contact and non-contact forces

6th grade (Year 7 in England) · 16 questions · Common Core: NGSS.MS-PS2-2, NGSS.MS-PS2-5 · England: KS3 Physics: Motion and forces

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1
Question 1
A book rests on a table. Which two forces act on the book?
- A. magnetism and gravity
- B. friction and air resistance
- C. no forces at all
- D. its weight down and the normal contact force from the table up
2
Question 2
Is this a contact force or a non-contact force: friction?
- A. contact force
- B. non-contact force
3
Question 3
Types of force: which statement is NOT true?
- A. Non-contact forces only act on metals.
- B. Gravity is a non-contact force.
- C. Forces are measured in newtons using a newton meter (force meter).
- D. Friction is a contact force.
4
Question 4
A balloon rubbed on hair can pick up small bits of paper without touching them. Which force is acting?
- A. electrostatic force
- B. tension
- C. upthrust
- D. friction
5
Question 5
Is this a contact force or a non-contact force: tension in a rope?
- A. contact force
- B. non-contact force
6
Question 6
Types of force: which statement is NOT true?
- A. Magnets can push or pull without touching.
- B. Air resistance is a non-contact force.
- C. Forces are measured in newtons using a newton meter (force meter).
- D. Gravity is a non-contact force.
7
Question 7
A book rests on a table. Which two forces act on the book?
- A. magnetism and gravity
- B. no forces at all
- C. its weight down and the normal contact force from the table up
- D. friction and air resistance
8
Question 8
Is this a contact force or a non-contact force: gravity (weight)?
- A. contact force
- B. non-contact force
9
Question 9
Types of force: which statement is NOT true?
- A. Non-contact forces only act on metals.
- B. Magnets can push or pull without touching.
- C. Forces are measured in newtons using a newton meter (force meter).
- D. Friction is a contact force.
10
Question 10
Why do astronauts on the Moon still have weight?
- A. The Moon's gravity acts on them without touching
- B. There is air on the Moon pushing them down
- C. They wear heavy boots
- D. Friction holds them down
11
Question 11
Is this a contact force or a non-contact force: magnetic force?
- A. contact force
- B. non-contact force
12
Question 12
Types of force: which statement is NOT true?
- A. Friction is a contact force.
- B. Magnets can push or pull without touching.
- C. Forces are measured in newtons using a newton meter (force meter).
- D. Non-contact forces only act on metals.
13
Question 13
A boat floats on a lake. Which force from the water holds it up?
- A. magnetic force
- B. upthrust
- C. tension
- D. weight
14
Question 14
Is this a contact force or a non-contact force: magnetic force?
- A. contact force
- B. non-contact force
15
Question 15
Types of force: which statement is NOT true?
- A. Tension is a non-contact force.
- B. Magnets can push or pull without touching.
- C. Gravity is a non-contact force.
- D. Friction is a contact force.
16
Question 16
A boat floats on a lake. Which force from the water holds it up?
- A. upthrust
- B. magnetic force
- C. tension
- D. weight

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Answer key: Contact and non-contact forces

1. D. its weight down and the normal contact force from the table up
2. A. contact force
3. A. Non-contact forces only act on metals.
4. A. electrostatic force
5. A. contact force
6. B. Air resistance is a non-contact force.
7. C. its weight down and the normal contact force from the table up
8. B. non-contact force
9. A. Non-contact forces only act on metals.
10. A. The Moon's gravity acts on them without touching
11. B. non-contact force
12. D. Non-contact forces only act on metals.
13. B. upthrust
14. B. non-contact force
15. A. Tension is a non-contact force.
16. A. upthrust