Задание

Match the words below with their definitions. There are four extra words.

Write one word in each gap.

research, inventor, machine, permission, crowd, experiment, field, heat, height, power

The person who studied or created something that hasn't been existing before. (n)

A specific area of activity or interest (for example, in science). (n)

The temperature of something (usually high). (n)

It has got several moving parts and uses power to do a particular type of work. (n)

The act of allowing someone to do something. (n)

To study a subject in detail. (v)