Science

Hypotheses

A testable idea that attempts to explain a phenomenon or answer a scientific question.

Dependent variable

A variable that depends on the conditions set up in an experiment.

Independent variable

A variable the scientist manipulates.

Controlled study

All variables are controlled except one.

Data

Information from their studies.

What does the natural world include?

Our physical environment (atoms, galaxy) forces and energies such as gravity and solar radiation.

What are the two components of science?

Science is both a process of learning about the natural world and a summary of what we have already learned.

Prediction

Specific statements about what we could expect to observe if the hypotheses are true.

What is the title of this lesson?

The Nature of Science

What is the goal of science?

The goal of science is to discover how the rules of the natural world operate and what effect they have.

How do scientists examine the workings of the natural world.

by collecting evidence

What must scientist do if a large number of tests refute their hypotheses?

reject the hypotheses

What is the relationship between hypotheses and predictions?

Hypotheses are ideas and predictions are about observations if the hypotheses are true.

What statement best describes the process of science?

It produces knowledge over time.

Define correlation....

a meaningful and predictable relationship between variables

Scientist only accept or reject hypotheses based on .....

evidence from ongoing tests

Name two methods scientists use to test predictions.

experiments and models

What plays an especially important role in the early stages of an investigation?

making observations

What activities make up the process of science?

making observations, asking questions, developing hypotheses, making and testing predictions, analyzing and interpreting data

What is involved in testing ideas?

predictions, observations, experiments

Why are quantitative data helpful to scientists?

they provide precision and are easy to compare

What do scientists use models for?

to generate predictions when they cannot observe a phenomenon directly