Science Revision Chapter 11

Speed describes ( ? ).

The unit of speed is metre per second or ( ? ).

Our walking speed is about ( ? ) or 4.0 km/h.

The speed of an aeroplane is ( ? ).

The speed in which the Earth moving round the Sun is ( ? ).

• True

• False

To ( ? ), we can draw a distance-time graph.

When the object ( ? ), the distance-time graph is a horizontal line.

When the object moves at steady speed, the distance-time graph is a straight line with a slope. The higher the speed, ( ? ).

An object is said to be in uniform motion when it ( ? ).