Chapter 2 The World Of Science

The thermostat recognizes the room temp is below the set temp and signals heat to turn on. 

The purpose of repeated experimental trials is to 

Which group most likely would have disagreed with Rachel Carson's findings on DDT?

Scientists use ____________ to understand how systems work and to predict changes in a system. 

What are you being when you let personal feelings enter a decision?

In this example of a system what is output?

Which would be the most appropriate tool for modeling a complex system?

A well-tested explanation for a wide range of observations or experimental results is called a

Another scientist conducts your experiment. This is an example of?

Future testing can still prove an accepted scientific _____________ to be incorrect.

What kind of observation deals with numbers?

A puddle is frozen. It must be below zero degrees outside.

The property that describes what happens in a system is called the

Joe is designing an experiment. Why does he need to write down the steps clearly?

When scientific work conflicts with beliefs of society and its leaders,  controversy can arise.

Which describes how opinion and scientific evidence are related?

what kind of bias is a mistake in the design of an experiment making an outcome more likely?

Because of gravity, everything that goes up must come down.

Old TV shows are black and white. Penguins are black and white. Some old TV shows are penguins

The theory of gravity describes the attraction between all objects in the universe.

What type of scientific investigation involves identifying and controlling variables?

Why is it useful for scientists to develop models for the structure of atoms?

Scientists must evaluate, or determine the quality of, each other's scientific explanations.

The purpose of repeated experimental trials is to 

Tamara uses sticks and balloons to show how bones and muscles move. She isusing a

What is the independent variable in the experiment?

A scientific opinion describes how something works or why something happens.

Galileo used his telescope to collect evidence that planets revolved around Earth.

The statement, “Moonlight is caused by the moon reflecting sunlight” is an example of a(n)

Which of the following can be described as a simple system?

A group of parts that work together is called a 

A graph is used when an independent variable is?

Data and observations collected through scientific processes are called ___________ evidence.

What does this video demonstrate? 

A thermostat reaches a set value, the thermostat switches off. This action is an example of

The NFL season kicks off tonight with the Steelers vs. the Patriots. The winner will be 

Turtle have shells. They must use shells for protection.

What was the independent variable in Redi's experiment?

The amount of matter an object has is its?

The fuel in a home heating system is part of the ___________ of the system.

Many birds fly toward the equator in fall. Birds prefer warm weather.

What is the dependent variable in this experiment?

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