Science 8 OST Review Part 1

Front

What is a magnetic force?

Back

A magnetic force is a type of force that arises from the interaction between magnets or between a magnet and a magnetic material. It can attract or repel objects.

Front

What is friction?

Back

Friction is the force that opposes the motion of an object when it comes into contact with another surface. It is essential for slowing down or stopping moving objects.

Front

What is an unbalanced force?

Back

An unbalanced force is a net force acting on an object that causes it to accelerate or change its motion. It is necessary to change the state of motion of an object.

Front

What is a divergent boundary?

Back

A divergent boundary is a tectonic plate boundary where two plates move away from each other, often resulting in the formation of new crust, such as mid-ocean ridges.

Front

What is subduction?

Back

Subduction is the process where one tectonic plate moves under another and sinks into the mantle, often leading to volcanic activity and the formation of trenches.

Front

What is a mid-ocean ridge?

Back

A mid-ocean ridge is an underwater mountain range formed by plate tectonics, where new oceanic crust is created as tectonic plates pull apart.

Front

What is gravitational force?

Back

Gravitational force is the attractive force between two masses, such as the Earth and an object, which pulls objects toward each other.

Front

What is the role of gravity in motion?

Back

Gravity affects the motion of objects by pulling them toward the center of the Earth, influencing their speed and direction.

Front

What is the difference between balanced and unbalanced forces?

Back

Balanced forces are equal in size and opposite in direction, resulting in no change in motion. Unbalanced forces cause an object to accelerate or change direction.

Front

What is a trench in geological terms?

Back

A trench is a deep, narrow depression in the ocean floor, often formed at convergent boundaries where one plate subducts beneath another.