امتحان ساينس Science -Concept (4.1) - الصف الخامس

Air resistance is a type of ......... force 

A bicycle brake pulls back the movement of the tires by ....... force

The feather took ........... time to fall on earth than a paperclip

.......... is a force that attracts metal objects made of iron, nickel or cobalt by pulling on them.

The moon stays in a fixed orbit around Earth due to the ...........

Gravity keeps our atmosphere around Earth.

All objects have gravity because they all have .........

The force of .......... keeps us from floating into space like that happens with astronauts.

The ball's direction changes because the ...........force is acting on the ball.

Earth is bigger than moon ,so earth has...........

The ...... of the object is affected by air resistance

........... slows the motion of objects 

........ it is a force that opposes the movement of an object as it passes through air.

You cannot see gravity, but you know it is there because you can see its effects.

...... It is a force that opposes the motion of the body across a solid surface or through a gas or liquid