Flashcards for Science 4.2 Test

The tendency of an object to remain in motion or stay at rest unless acted upon by an outside force is ______________.

Interia

The distance traveled in a certain amount of time is ___________________.

speed

A force between surfaces that slows objects down or stops them from moving is_______.

friction

The use of a force to move an object a certain distance is ____________.

work

Any push or pull that makes an object start moving, stop moving, speed up, slow down, or change direction is ______________.

force

The ability to do work, either to make an object move or to change matter is _________.

energy

Any change in the speed or direction of a moving object is______________.

acceleration

A famous scientist that explained how force and motion are related was ________.

Isaac Newton

A famous scientist that discovered the idea of gravity was ____________.

Galileo

Energy that an object could have because of its position is ______________ energy.

Potential energy

Energy that an object has because it is in motion is __________ energy.

Kinetic energy

The force that pulls 2 objects together is _____________.

Gravity

*Be able to name examples of kinetic energy and potential energy.

* Be able to explain why it is easier to move an object across a smooth floor rather than a rough floor.

How do you calculate the speed of an object?

Divide the distance by the time it took it to travel that distance.

How can you tell when an object has moved?

Its position has changed.