2nd Nine Weeks Exams

If you know the amount of unbalanced force acting upon an object and the mass of the object, using Newton's 2nd Law what could you calculate?

acceleration

On Halloween you take a glow stick, crack the capsule inside and shake it until it glows. This is an example of light energy being transformed from what type of energy?

chemical

Molecules of two solids substances actually collide with each other to transfer energy in this method of heat transfer.

conduction

The law of inertia states that an object in motion will stay in motion and an object at rest will stay at rest unless acted on by an unbalanced force is which law of motion.

Newton's First Law

Meg and Rachel each have bowling balls with the same mass. They both roll them as hard as they can and then measure the speed of the balls. Meg's ball and Rachel's ball were measured to have the same speed. What do you know about the forces applied by the girls?

They applied an equal amount of force

Conduction occurs more easily between solids and liquids. This is because the particles in gases are...

farther part and move faster

The acceleration of an object would increase if there was an increase in the

force on the object.

Maria's father started a fire in the fireplace. He crumpled some paper, lit a match, and soon the logs in the fireplace were burning. In this case the stored chemical energy in the logs was changed into..

heat and light energy

Energy is transferred in solids by conduction, which means that

heat travels from the hotter object to the cooler object.

On a speed time graph, a graph that represents constant speed is one that has a

horizontal line (flat line)

Newton's first Law of motion tells us that an object in motion will move _____ unless acted on by an unbalanced force.

in a straight line

What form of energy does a compressed spring have?

potential energy

The sun heats the Earth mainly through...

radiation

Inertia is a property of matter that ____ changes in motion.

resists

The process of heat radiation is the only method of heat transfer that can occur through____

space

A car is accelerating when it is...

speeding up, slowing down, or changing direction.

What is an example of nuclear energy being converted into heat and light energy?

the sun

An object in motion will stay in motion unless acted on by what type of force?

unbalanced