SCIENCE 7
Quarter Three Summative Test
Name_____________________________Grade& Section_________________________Date_________Score____
Multiple Choice
Direction. Choose the letter of the correct answer. Write it on your answer sheet.
1. When is an object considered to be in motion?
I.
When its position changes with respect to a point of reference.
II.
When its distance changes with respect to a point of reference.
III.
When its direction changes with respect to a point of reference.
A. I and II only
B. I and III only
C. II and III only
D. I, II, and III
A girl leaves a science laboratory room and walks 10 meters north to a canteen. Then she turns and walks 30
meters south to the library. Answer question number 2 and 3.
2. What was the total distance travelled by the girl?
A. 10 m
B. 20 m
C. 30 m
D. 40 m
3. What is the girl’s total displacement from the science lab to the library?
A. 20 m south
B. 20 m north
C. 40 m north
D. 40 m south
4. Which of the following refers to the straight-line distance from the starting to the end point?
A. distance
B. displacement
C. speed
D. velocity
5. Which of the following is TRUE about an object that travels 5 meters to the left, then 2 meters up, then another
5 meters to the right?
A. The displacement of the object is equal to 12 meters.
B. The displacement of the object is equal to 12 meters down.
C. The total distance travelled by the object is equal to 12 meters.
D. The total distance travelled by the object is equal to 12 meters down.
6. Speed at an instant or at a point in an object‟s path of motion is called _________.
A. Average speed
B. Average velocity
C. instantaneous speed D. instantaneous velocity
For item numbers 7 and 8, refer to the table below. Data were obtained from a 200-meter dash competition.
Female Athlete
1
2
3
4
Recorded Time (s)
26.5
26.1
25.3
26.7
Male Athlete
1
2
3
4
Recorded Time (s)
22.4
21.9
23.0
22.6
7. Which of the following statements is/are TRUE?
I.
The male athletes are faster than the female athletes.
II.
Compared to the speed of the slowest male athlete, the speed of the fastest female athlete is slightly
higher.
A. I only
B. II only
C. Both I and II
D. Neither I nor II
8. How do you compute for the average speed of each athlete?
A. Divide 200 meters by the recorded time of travel.
B. Divide the recorded time of travel by 200 meters.
C. Multiply 200 meters by the recorded time of travel.
D. Divide 200 meters by twice the recorded time of travel.
9. Which of the following statements is NOT true about an object moving with constant speed?
A. The object is not accelerating.
C. The distance travelled by the object increases uniformly.
B. The speed of the object is equal to zero. D. The speed of the object remains the same all throughout the
travel.
Consider this displacement vs. time graph which represents the motion of a cart along a straight line.
Refer to this graph to answer question number 10 & 11.
10.
11.
During which time interval was the cart at rest?
A. I-II
B. II-III
C. III-IV
D. IV-V
During which time interval was the cart on its return trip?
A. I-II
B. II - III
C. III – IV
D. IV – V
12. Which of the following graphs shows that the objects motion is accelerating?
13. Acceleration is the rate at which the ______ of a body changes.
A. Distance
B. Displacement
C. Speed
D. velocity
14. The speeds of a bus travelling on a straight road are given in the following table:
Time, t (s)
0
1
2
3
4
Speed, V (m/s
0
2
4
6
8
Which of the following statements is/are CORRECT?
I.
The bus travels 32 m in 4s.
II.
The bus travels with an average speed of 2 m/s.
III.
The bus travels with uniform acceleration of 2 m/s/s.
IV.
The instantaneous acceleration of the bus is 2 m/s/s
A. I only
B. II, III, & IV
C. III only
D. III and IV
15.The diagram below shows the pattern of the drops of oil as the car runs from points A to C. Which of the
following
describes the motion of the car between
points A
and B and points B and C.?
A. The car moves at constant speed from A to B and increasing speed from B to C.
B. The car moves with increasing speed from A to B and decreasing speed from B to C.
C. The car moves at constant acceleration from A to B and increasing acceleration from B to C.
D. The car is decelerated from A to B and accelerated from B to C.
PROBLEM SOLVING EXERCISES
Direction: Solve the following problems. (5 points each)
1. A car accelerates from rest to a speed of 10 m/s in 20 seconds. What is the acceleration of the car?
2. A car slows down from a speed of 20 m/s to rest in 25 seconds. What is the acceleration of the car?
3. A plane has a take-off speed of 80 m/s. What is its acceleration if it started from rest and took 40 seconds
to take off?
.