How many types of machines are there in 'Complex machine'

Is a knife a simple machine?

The crane shown in this image is an example of a ____________machine

The scissor in this image has the combination of ___________ and __________ simple machine

____________ type of machine can work without human energy.

The best type of simple machine to use to get load on/off this truck to the ground is ____________

This image shows a type of simple machine called ______________

Which of these options is not a complex machine?

Machine helps us to do our work slower?

Can machine can help us to do work that are dangerous and heavy for man to do?

Which of these options is not part of evolution of man?

The main material used in the stone age is ________________

The age before the current age we are now was known as the ________

Which of these tools were made during the Iron age?

The simple machine can be subdivided/further divided into _____________

Which of these devices can be used to warn the owners of a house that an intruder is in their house?

This button in Lego WeDo would ______________

This button can be found in the _____________ block

This button can be found in the _____________ block

The area where the Sprite is found in Scratch is called _______________

The command shown in the image is to ____________