Position and Motion - Science With Mrs. Cothern

[Pages:24]Name

Date

Class

Content Vocabulary

LESSON 1

Position and Motion

Directions: On each line, write the term from the word bank that correctly completes each sentence. NOTE: You may need to change a term to its plural form.

dimension reference point

displacement relative

motion specify

position

1. If you ask a friend to meet you somewhere, you will need

to

your location.

2. position of an object.

is the difference between the initial position and the final

3. Your distance and direction from a reference point (for example, two blocks north of

school) will define your

.

4. Comparing your location to a starting point, or describe where you are.

, helps

5. To describe the position of your school on a map, you need to describe its location in

two

.

6. The people on a bus are not moving in relation to the seats inside the bus, but they are

in

compared to the streets outside.

7. For the field trip, the buses will park three blocks east of the museum; this describes the

position of the parking spot

to the museum.

Describing Motion

9

Name

Date

Class

Content Practice A

LESSON 1

Position and Motion

Directions: Complete this concept map by choosing terms from the word bank and writing them in the correct spaces. Each term is used only once.

difference final

direction initial

displacement reference point

An object's

distance

position is its 1.

and 2.

from a 3.

4. is the

5. between its

6. and

7.

positions

Directions: On each line, write the term that correctly completes each sentence.

8. The terms

and

when giving opposite directions from a reference point.

can be useful

9. The process of changing positions is

.

10.

is the length of a path taken, whereas

is the difference between starting and ending locations.

Name

Date

Class

Content Practice B

LESSON 1

Position and Motion

Directions: Complete these paragraphs by writing the correct terms on the lines. Some terms might be used more than once.

To describe an object's (1.)

, you must first choose a(n)

(2.)

as a starting place. From there, you must specify the

(3.)

to the object and the (4.)

in

which it lies from the starting place. If you are giving directions to two objects located

in different directions from the same (5.)

, it can sometimes

be helpful to describe one object as being in the (6.)

direction

from that place and the other in the (7.)

direction.

An object is in (8.)

any time its

(9.)

is changing. In most cases, such a change involves changes in

(10.)

and (11.)

from the starting

point. However, if an object returns to its starting point, its

(12.)

is zero, even though it might have traveled

a considerable (13.)

.

14

Describing Motion

Name

Date

Class

School to Home

Position and Motion

For this activity, you will need the map below, a ruler, and a pencil. Refer to your textbook if you need help.

LESSON 1

1. You are standing at the corner of River Street and Third Street. A friend calls and tells you to walk three blocks west of your present position to meet her. Where is your friend? What is the reference point for her directions?

2. Someone is standing at the southwest corner of Riverview Park. He wants to go to the post office by the shortest route. Write a set of directions for him. What distance will he walk?

3. Use a ruler and pencil to draw a line on the map that represents the displacement of the person who walked from Riverview Park to the post office in the question above. Without measuring, determine whether his distance walked and displacement are equal. Explain your answer.

Describing Motion

15

Name

Date

Key Concept Builder

Position and Motion

Key Concept What is the difference between distance and displacement?

Class

LESSON 1

Directions: The diagram above represents an oval race-car track. Use the diagram to answer each question or respond to each statement.

1. When a race car reaches point B on the first lap, what is its distance traveled and its displacement?

2. When the car reaches point C on the first lap, what is its distance traveled and its displacement?

3. When the car reaches point D on the first lap, what is its distance traveled and its displacement? (Hint: Use a ruler.)

4. If a race is 10 laps, what is the car's distance traveled and its displacement when it reaches the finish line?

Name

Date

Class

Lesson 1 Review

Position and Motion

True or False

Directions: On the line before each statement, write T if the statement is true or F if the statement is false.

1. When you describe a position, you must only specify a distance. 2. Directing someone to walk north and west is describing a position in two

dimensions. 3. Whether motion occurs depends on the reference point you use. 4. Displacement does not require movement.

LESSON 1

Matching

Directions: On the line before each definition, write the letter of the term that matches it correctly. Each term is used only once.

5. starting point describing the location of an object

A. positive direction

6. the reference direction

B. negative direction

7. direction opposite the reference direction

C. reference point

Multiple Choice

Directions: On the line before each question, write the letter of the correct answer.

8. Which is a reference direction? A. faster B. the street C. to the north

9. Which statement indicates that motion has occurred? A. The reference point has changed. B. The position of the object has changed. C. The object being described has changed.

Name

Date

Class

Content Practice A

LESSON 2

Speed and Velocity

Directions: On each line, write the term from the word bank that correctly completes each sentence. Each term is used only once.

average

constant

direction

distance

horizontal

instantaneous

steep

time

velocity

1. Speed is a measure of the

of

.

an object travels in a unit

2. When a moving object's change of position is equal in every second, it is moving

at a(n)

speed.

3. An object's speed at any particular moment is its

speed.

4. Its speed for the entire duration that it is in motion from one place to another is

its

speed.

5. A(n)

line on a distance-time graph shows a fast speed.

6. A(n) motion.

portion on a distance-time graph shows a period of no

7. The and

of a moving object includes its speed .

30

Describing Motion

Name

Date

Content Practice B

Speed and Velocity

Directions: Draw a line on each of the time-distance graphs below as instructed.

Class

LESSON 2

1. Show a car's constant speed of 75 km/h on a city street.

Directions: Answer each question on the lines provided.

3. What is an object's velocity?

2. Show the motion of a car that travels for 30 seconds on a highway at a speed of 2 km/h, pulls off on the shoulder and stops for half a minute, and then resumes its trip at half its previous speed.

4. What are three ways that an object can change its velocity?

Describing Motion

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