Science Final

In science,________ may change

Facts

The scientific method is a method for _______________.

Gaining knowledge

If you move a substance from one container to another and its volume changes, its a ______.

Gas

The scientific spirit is based upon ______________________________.

Hypotheses of well known philosophers

In science, an answer to your question/problem is a __________.

Hypothesis

Scientists repeat experimental findings in order to ___________________________________.

Improve upon experimental design or eliminate unseen errors

Reducing friction on a machine _________________.

Increases its efficiency

When a pair of balanced forces acts on an object, the net force result is _________________.

Equal to zero

What is an example of constant acceleration due ONLY to a change in direction?

Traveling around a circular track

The type of force measured by a grocery store spring scale is ________.

Weight

The atomic mass of an element is __________________________________________________.

A weighted average of the masses of an elements isotopes

As you push a cereal box across a tabletop, the sliding friction acting on the cereal box ______________________________________.

Acts in the direction opposite of motion

How can you make the work output of a machine greater than the work input?

By increasing the output distance

What is an example of a physical change?

Sawing a piece of wood in half

v=d/s is the equation that defines _______.

Speed

Give an example that is a scientific hypothesis.

The moon is made of green cheese

When an unbalanced force acts on an object, __________________________.

The object accelerates

If experimental findings are not reproducible, __________________________________.

The results are not considered valid