Name: 
 

Science Grade 8 Lesson 1 Practice Problems



Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
 

 1. 

Base your answer to this question on the diagram below.

sci_g8_l1_problems_files/i0020000.jpg

The diagram represents the total travel of a teacher on a Saturday.  Which part of the trip is made at the greatest average speed?
a.
Q
c.
R
b.
S
d.
T
 
 
The graph below shows the distance traveled over time by a student walking down a hall. Use the information shown on the graph to do this question.

sci_g8_l1_problems_files/i0030000.jpg
 

 2. 

What was the average speed of the student from 0 seconds to 5 seconds?
a.
5 meters/second
c.
4 meters/second
b.
3 meters/second
d.
2 meters/second
 

 3. 

During which time interval was the student moving the fastest?
a.
D
c.
B
b.
A
d.
C
 

 4. 

. The graph below relates distance and time for a moving object.

sci_g8_l1_problems_files/i0060000.jpg

What is the speed of the object represented by the graph above?
a.
0.5 m/s
c.
20 m/s
b.
2 m/s
d.
10 m/s
 

 5. 

Base your answer to this question on the picture below.


sci_g8_l1_problems_files/i0070000.jpg

You are riding in an airplane that is moving at a speed of 600 km/h. If you walk from the back to the front of the airplane at a speed of 1 km/h, your speed  relative to the ground is _______.
a.
1 km/h
c.
599 km/h
b.
600 km/h
d.
601 km/h
 

 6. 

Base your answer to this question on the table below.

sci_g8_l1_problems_files/i0080000.jpg

The table shows times required for the same toy car to travel 10 m across an identical section of a floor after it is pushed.  The difference in times was probably caused by differences in _______.
a.
air resistance
c.
surface friction
b.
car mass
d.
force exerted
 



 
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