PS Chapter 1 Review

how close is a measurement to its true value.

In significant figures, you always round to the least accurate number.

Science is firm and unchanging.

prescribed decimal place that determines the amount of rounding off to be done

The first step in the scientific method is to observe.

Write in scientific notation 900,000,000 m

Models are used by scientist to show small things, predict future events, and show things that may be unsafe.

Gravity is considered to be a scientific law.

When Multiplying numbers in scientific notation you always subtract the exponents

summary of many experimental results and observations

What is the straight line distance between two points called?

Calculate the following 4 x 10 *5 X 2 x 10 *2

A Kilogram is 1/100 of a gram.

the application of science for practical purposes.

Evolution is classified as a scientific theory.

The amount of matter in an object is the objects what?

the exactness of a measurement.

explanation based on observation

best guess as the answer to the question

When dividing numbers in scientific notation you always subtract the exponents

factor that changes in an experiment in order to test the hypothesis.

Convert 3456 mm to m

Which of the following describes something that scientist do?

Write in scientific notation 0.0000009 g

All calculations in science are based on what system of measurement?

expressing a quantity as a number multiplied by 10 to the appropriate power.

Which answer to the following is correct in significant figures? 5.5 x 2.35 x 6.789

You form a hypothesis only after you test or experiment.

Calculate the following 8 x 10 *5 / 2 x 10 *2

part of an experiment that doesn’t change.

The international system of units used by scientist is also known as what?

research that adds to the body of scientific knowledge

Using scientific notation allows scientist to allow for very large or very small numbers.

Which of the following is used by scientist to make their information more presentable?

Convert .289 km to mm

Which of the following is not one of the three main branches of science?

A millimeter is the same as 10 meters.

practical application of scientific knowledge

The measure of the gravitational force exerted on an object is it’s what?

knowledge obtained by observing natural events and forming testable ideas

What is the basic unit used to measure length in SI units?

steps followed to solve scientific problems.

The size of a body region in three dimensional space is it’s what?

ability and willingness to make judgments on an objective basis.