school
pirates
transportation
bones and muscles
calories
100

horizontal circular metal hoop supporting a net through which players try to throw the basketball

What is a basketball  hoop?

100

A piece of metal or other hard material curved or bent back at an angle, for catching hold of or hanging things on.

What is a hook?

100

roller skates (= special boots worn for travelling fast for sport or enjoyment) with a single row of small wheels on the bottom

What are in-line skates?

100

The rigid supporting structure of an object such as a vehicle, building, or piece of furniture.

What is a frame?

100

A measure, quantity, or frequency, typically one measured against another quantity or measure.

What is a rate?
200

A fence or barrier made of rails.

What are railings?

200

A bed made of canvas or rope mesh suspended from two supports by cords at both ends.

What is a hammock?

200

A long, narrow shaped board used in surfing.

What is a surfboard?

200

become shorter and tighter in order to effect movement of part of the body.

What is to contract?

200

to use energy, effort, force, etc., especially until there is no more left:

What is to spend?

300

a  track for running foot races

What is a running track?

300

A hollow place in a solid body or surface.

What is a hole?

300

a small aircraft that consists of a metal frame covered with strong cloth and that is flown through the air by a person who hangs beneath it

What is a hang glider?

300

Cause (a limb or muscle) to become less rigid.

What is to relax?

300

The capacity to have an effect on the character, development, or behaviour of someone or something, or the effect itself.

What is influence?

400

A substance made by mixing other substances together.

What is a misture?

400

Break up and move earth with a tool or machine, or with hands, paws, snout, etc.

What is to dig?

400

A turbine having a large vaned wheel rotated by the wind to generate electricity.

What is a wind turbine?

400

A part of an organism which is typically self-contained and has a specific vital function.

What is an organ?

400

Either of the two sexes (male and female), especially when considered with reference to social and cultural differences rather than biological ones

What is gender?

500

a row of frames where bicycles can be left

What is a bike rack?

500

A tool with a sharp-edged, typically rectangular, metal blade and a long handle, used for digging or cutting earth, sand, turf, etc.

What is a spade?

500

A cloth canopy which fills with air and allows a person or heavy object attached to it to descend slowly when dropped from an aircraft, or which is released from the rear of an aircraft on landing to act as a brake.

What is a parachute?

500

An internal or external framework of bone, cartilage, or other rigid material supporting or containing the body of an animal or plant. 

What is a skeleton?

500

A disagreement or quarrel.

What is a misunderstanding?