Science Exercise Unit 3 Movement

1) Table I shows the time taken by four students to reach the finishing line in a sprinting event.
Student----------Distance/m----------Time/second
Raju----------------100------------------18
Kamal---------------100------------------20
Chen----------------100------------------25
Tony----------------100------------------28
Who run the fastest?
A Raju
B Chen
C Tony
D Kamal

2) A car travels a distance of 270 km in 3 hours. What is the speed of the car?
A 80 km/h
B 90 km/h
C 100 km/h
D 120 km/h

3) A pupil wants to determine the speed of several ants. Which of the following information should be
recorded?
A The time and distance travelled by the ants
B The mass and size of the ants
C The time taken by the ants
D The observation of the ants arriving at the finishing line

4) Which of the following statements are true?
I All moving objects have speed
II A faster object takes a shorter time to travel a given distance
III A faster object travels a shorter distance in a given time
A I and II
B I and III only
C II and III only
D I, II and III

5) What is meant by speed?
A A calculation of the distance travelled by an object
B A difference between time and distance
C A measurement of how fast an object moves
D A relationship between moving objects

6) Which of the following is a correct unit of speed?
A cm/s
B h/km
C m/s
D cm/km

7) A car travel a distance of 80 km in one hour. How far can the bus go in three hours at the same speed?
A 120 km
B 140 km
C 210 km
D 240 km

8 ) Which of the following vehicles is the fastest?
A A van that travelled 320 km in 8 hours
B A lorry that travelled 240 km in 4 hours
C A car that travelled 300 km in 3 hours
D A bus that travelled 140 km in 2 hours

9) Diagram 5 shows the journey of a motorcyclist from City X to City Z through City Y. The time
taken is 3 hours.

------------------120 km---------------------60 km
X ----------------------------------Y------------------Z Diagram 5

Find the speed of the motorcycle
A 30 km per hour
B 40 km per hour
C 50 km per hour
D 60 km per hour

10) What is the speed of a ball which moves a distance of 900cm in 30 s?
A 3 cm/s
B 0.3 cm/s
C 30 cm/s
D 300 cm/s

Answer of Unit 3
Unit 1
Unit 2
Unit 4
Unit 5
Unit 6
Unit 7