العلوم الصف الثالث الاعدادى الترم الاول

A train starts to move at 6 O'clock in the mo r ning. Then what is the time of arrival if it moves at speed of 40 Km/h to cover the distance of 200 Km

............... is the actual length of the path that a moving object takes fr om the starting point of movement to the end point

An object was placed between a convex lens whose focal length is 6 cm. a nd a plane mirro r .Complete the following statement:

The image fo r med of the object by a convex lens at a distance of ………..cm. fr om it's face

Average speed. It is represent the regular speed by which the object moves. equal distances at same period time

The earliest life fo r ms began to appear on the Earth after….. million years fr om the Big Bang.

Within minutes of Big Bang, hydrogen gas was fo r med by a percentage of ...........%

In Milky Way galaxy, the old stars (the older) gather in the….. of the galaxy.

A train moves at a speed (100 km/h), then it cover a distance of (40 km) within time .......... hours.

A moving car covers a distance of (.........) through (150 min.), then its speed is 80 km/h

Sudden violent nuclear reactions occur within the star which led to its explosion