Science 7 1st Quiz 3rd Quarter

1. What causes tides on Earth?

• Wind
• Moon's gravity
• Sun's heat
• Earth's rotation

2. What is mass?

• Amount of space an object occupies
• Force exerted by gravity
• Amount of matter in an object
• Weight of an object

3. What unit is used to measure force?

• Kilogram (kg)
• Newton (N)
• Meter per second squared (m/s²)
• Joules (J)

4. What is weight?

• The force of gravity on an object
• The object's volume
• The object's acceleration
• The force of friction

5. Which object has more weight?

• Object with more acceleration
• Object with more mass
• Object with more volume
• Object with more surface area

6. What is friction?

• Force that opposes motion
• Force due to gravity
• Pull of a rope
• Upward force by a surface

7. Which of these is a non-contact force?

• Tension
• Friction
• Magnetic force
• Normal force

8. What type of force keeps a chandelier suspended?

• Buoyant force
• Electric force
• Tension
• Friction

9. What happens when two teams exert the same force in tug of war?

• Rope moves in one direction
• Rope stays at rest
• Rope breaks
• Rope speeds up

10. What is a balanced force?

• Forces cancel each other out
• Forces are unequal
• Forces are parallel
• Forces increase