Contact Forces
What is a force that requires contact between two objects?
Contact Forces
What is a force that can act at a distance?
Non-Contact Force
What is the force that resists motion between two surfaces in contact?
Friction
What is the force that pulls objects toward the Earth?
Gravity
What is the force exerted by magnets?
Magnetic Force
Bonus 200
Bonus 200
What force keeps planets in orbit around the sun?
Gravity
What type of friction occurs when an object rolls over a surface?
Rolling Friction
What happens to the force of gravity as distance increases?
Gravity Decreases
What are the two poles of a magnet called?
North pole and South pole
What force opposes the motion of objects sliding against each other?
Friction
What is the force called where the movement of electrons are involved?
What is the term for the friction that occurs when an object is sliding?
Kinetic Friction / Dynamic Friction / Sliding Friction
How does mass affect the force of gravity between two objects?
Larger Mass results in stronger Gravity
Smaller Mass results in weaker Gravity
What materials are attracted to magnets?
Materials strongly attracted to magnets are called ferromagnetic and include iron, steel, nickel, and cobalt
Name the force that acts when two surfaces are pressed together.
Compression Force
Bonus 400
Bonus 400
How can friction be reduced?
By using lubricants, polishing surfaces to make them smoother, or by replacing sliding friction with rolling friction using bearings or wheels
What is the acceleration due to gravity on Earth?
9.8 meters per second squared (m/s²)
How do like poles and opposite poles interact?
Like Poles - Repel
Opposite poles - Attract
What type of force is exerted when you push a door open?
Applied Force
What force can cause charged particles to attract or repel each other?
Magnetic Force
What is the importance of friction in everyday life?
Enabling activities like walking, gripping objects, and stopping vehicles, while also contributing to heat generation.
What role does gravity play in tides?
Gravity, primarily from the Moon and the Sun, is the primary force causing tides, leading to the rise and fall of ocean water levels as Earth rotates through the gravitational bulges they create.
What is an example of magnetism in everyday life?
Speakers, Fridge magnets, Doors, Electric motors, Generating electricity, Toys, Medical equipment, Compasses, Maglev trains, induction cookers.