Science Chapter 3 Flashcards

Questions and Answers

What are the four steps to make a graph?

Choose dependent and independent variables. (correct)

Draw a straight line connecting the dots.

Plot each point. (correct)

Make a scale for each axis. (correct)

What is a variable that can only have a positive value?

Distance

What is the difference between distance and position?

Distance is the total path covered, while position refers to the object's location relative to an origin.

Which way do negative and positive numbers go?

Positive numbers go to the right, negative numbers go to the left. Signup and view all the answers

What variables can be both positive and negative?

Position, speed, and force Signup and view all the answers

Which way is north, east, south, and west in terms of positive and negative?

North: positive, East: positive, South: negative, West: negative. Signup and view all the answers

Where does position go and where does time go on a graph?

Position goes on the vertical axis (y) and time goes on the horizontal axis (x). Signup and view all the answers

What is physical science all about?

Relationships between variables. Signup and view all the answers

What happens to the graph when the variables have a weak relationship?

The line looks like scattered dots, not an obvious pattern. Signup and view all the answers

What is a model?

A model is a relationship that connects two or more variables. Signup and view all the answers

What does a steeper line mean/show?

That the person/thing is moving faster. Signup and view all the answers

How do you calculate acceleration?

You divide the change in speed by the total time. Signup and view all the answers

What is the word that people use to describe slowing down?

Deceleration Signup and view all the answers

What is the difference between constant speed and constant acceleration?

Constant acceleration means speed changes the same amount each second, constant speed means speed stays the same. Signup and view all the answers

When does acceleration occur?

Whenever there is a change in speed, direction, or both. Signup and view all the answers

What is curved motion and what causes it?

Curved motion is caused by sideways acceleration. Signup and view all the answers

What is a parabola?

A bowl-shaped curve. Signup and view all the answers

What axes are the independent and dependent variable on?

Independent: x-axis, Dependent: y-axis. Signup and view all the answers

What does m/s squared mean?

Meters per second per second. Signup and view all the answers

What is speed with direction?

Velocity Signup and view all the answers

How is acceleration shown on a graph?

By the slope of the line. Signup and view all the answers

Which one is the x and y in this coordinate pair (3, 5)?

3 is the x, 5 is the y. Signup and view all the answers

What is the rate at which velocity changes?

Acceleration Signup and view all the answers

If an object moves on a curved path, what is the force of gravity called?

The force is called parabola. Signup and view all the answers

How do you solve for intervals?

Extra credit. Signup and view all the answers

What is a projectile?

An object moving through space and affected only by gravity. Signup and view all the answers

What is average speed?

Average speed = change in speed divided by change in time. Signup and view all the answers

What is acceleration with constant speed?

Acceleration Signup and view all the answers

What is the slope formula?

Slope = rise divided by run. Signup and view all the answers

Study Notes

Creating Graphs

Steps to create a graph:
- Identify dependent (y-axis) and independent variables (x-axis).
- Create a scale for axes based on the largest value.
- Plot data points by aligning x-values with corresponding y-values.
- Draw a smooth curve to represent the data trend without connecting individual points.

Variables

Distance is always a positive value.
Position can be either positive or negative, depending on its relation to the origin.

Number Direction

Positive numbers extend right (in front of the origin) and negative numbers extend left (behind the origin).

Vector Variables

Variables such as position, speed, and force can be both positive and negative; these are known as vectors.

Axes Orientation

Position is plotted on the vertical axis (y-axis) and time on the horizontal axis (x-axis).

Physical Science

Focuses on the relationships between various variables.

Weak Relationships in Graphs

A weak relationship between variables results in a graph that appears as scattered dots without a clear pattern or curve.

Models in Science

A model connects two or more variables to demonstrate relationships.

Line Steepness

A steeper line on a graph indicates faster movement.

Acceleration Calculation

Calculated by dividing the change in speed by the total time taken.

Deceleration

The term used to describe an object's slowing down.

Speed vs. Acceleration

Constant speed remains unchanged, while constant acceleration involves a consistent change in speed over time.

Acceleration Occurrence

Acceleration happens with any change in speed, direction, or both simultaneously.

Curved Motion

Caused by sideways acceleration, resulting in a curved path of motion.

Parabola

Defined as a bowl-shaped curve.

Axis Identification

Independent variable is placed on the x-axis, dependent variable on the y-axis.

Acceleration Metrics

Measured in meters per second squared (m/s²).

Velocity

Speed that includes direction is referred to as velocity.

Graphing Acceleration

Represented by the slope of the line on a graph.

Coordinate System

In a coordinate pair (3,5), 3 corresponds to the x-value and 5 corresponds to the y-value.

Acceleration definition

The rate at which velocity changes.

Gravity and Curved Paths

The force acting on an object moving on a curved path due to gravity is often referred to as a parabola.

Average Speed Calculation

Average speed can be calculated by dividing the change in speed by the change in time.

Slope Formula

The slope of a line is determined by the formula: slope = rise / run.

Projectile Motion

Describes objects moving through space, influenced only by gravity.

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Description

Test your knowledge with these flashcards on the four steps to make a graph. Understand the difference between dependent and independent variables, and learn how to plot points accurately. Perfect for mastering the basics of graphing in science!