Earth/Space Science CFE Review 2023

What is the purpose of a scientific law?

• to show how something works

• to describe a relationship in nature

• to explain why something nature happens

• to provide rules that scientists should follow

Which phrase defines a scientific theory?

• an untested idea

• an educated guess

• an accepted description

• a well-supported explanation

The theory of Plate Tectonics is the idea that the Earth's crust has many plates that move because of changes in temperature deep below the Earth's surface. It has changed over time. What would cause the theory to change?

• The addition of new empirical evidence.

• It was a bad theory to begin with.

• If the news ran a story about why it should be changed.

• If a famous scientist said it should be changed.

Tags

NGSS.HS-ESS1-5

Which of the following is an example of a scientific experiment?

• observation of plants or animals in their natural environment

• Physical or mathematical representation of an object or process

• an organized procedure to study something under controlled conditions

• collection of data from the unregulated world for comparative purposes

Tags

NGSS.MS-PS2-2

The independent variable

• Changes due to other factors

• The change that you are making on purpose

• Is an individual step of the experiment

• Can be different when repeating the same experiment

The dependant variable

• Is the thing you measure

• Depends on the people/place doing the experiment

• Must not change during the experiment

• Is the thing you change on purpose

Tags

NGSS.MS-PS3-4

A controlled variable

• The thing you change on purpose

• Can be measured to test your hypothesis

• Something in an experiment that can change but we keep the same

• Is the thing that determines how the experiment is run, in control of the experiment

The control group

• The parts of the experiment you keep the same

• The only group you collect data from

• The group you change on purpose

• Does not have the independent variable and is used for comparison

Tags

NGSS.MS-PS2-5

The process of obtaining informations by using the five senses is called _____________.

• model

• data

• observation

• hypothesis

Tags

NGSS.MS-LS1-8

__________occurs when an activity is repeated by the same person.

• repetition

• observing

• replication

• copying