امتحان ساينس Science -Concept (4.1) - الصف الخامس

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

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

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

Gravity keeps our atmosphere around Earth.

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

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.

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

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

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

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

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

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

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