Science Study Guide - Forces and Motion

What is force?

• A type of motion

• A push or a pull

• The resistance between two objects

• A combination of all forces acting on an object

What is net force?

• The combination of all the forces acting on an object

• The force that balances motion

• A single force acting on an object

• The force that resists gravity

What are balanced forces?

• Forces that resist acceleration

• Forces that do not change motion and have a net force of zero

• Forces that always act downward

• Forces that produce acceleration

What are unbalanced forces?

• Forces that cancel each other out

• Forces that combine to produce acceleration

• Forces that resist motion

• Forces that act on stationary objects

What determines the acceleration of an object?

• Its volume and mass

• The amount of gravity and distance from Earth

• The mass of the object and the force applied

• The friction and the force acting against it

What is gravity?

• A force that pushes objects apart

• A force that attracts objects toward each other

• The resistance between two surfaces

• The force that creates acceleration

What is friction?

• A force that attracts objects toward Earth

• The resistance when two surfaces rub against each other

• A type of acceleration

• The motion created by balanced forces

What is the geosphere?

• The part of Earth that is liquid water

• The mixture of gases surrounding Earth

• The mostly solid, rocky part of Earth

• The frozen water on Earth

What is the hydrosphere?

• The part of Earth that is liquid water

• The mixture of gases surrounding Earth

• The mostly solid, rocky part of Earth

• The frozen water on Earth

What is the cryosphere?

• The part of Earth that is liquid water

• The frozen water on Earth

• The mixture of gases surrounding Earth

• The area where life exists