Page 17 - E book prim 4

Delta Modern Language Schools
Science department
Grade 4
1st term 2024-2025

Speed

 Speed It is the distance travelled in a certain amount of time.

We measure speed by knowing

The distance Time
In meters or kilometers In seconds or hours

=

The units of measuringspeed

Meters per second (m/sec) Kilometers per hour (k/h)

Objects can travel different distances in the same amount of
time if they have different speeds

Faster moving objects have slower moving objects have
higher speeds lower speed per hour (k/h)

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