Task#1 Write words for these definitions 1. an object or machine that has been invented for a particular purpose
2. a movement of water (or air or electricity) in a particular direction
3. a small change to something in order to make it work better

Task#2 Choose 4 words from the list to complete the sentences: mission, snake, current, break down, marine life, tackle, plastic, barriers.

4. The device’s is to catch the ocean’s rubbish.

5. Water make lots of plastic rubbish drift together.

6. For a school project, Boyan designed a system of floating .

Task#1:

1. an object or machine that has been invented for a particular purpose - invention
To answer this question, we need to understand that an invention is something that is created for a specific purpose. It could be a device, machine, or any other object that is designed to fulfill a particular need. For example, the telephone, computer, or car are all examples of inventions.

2. a movement of water (or air or electricity) in a particular direction - current
In this case, we are referring to the movement of water, air, or electricity. A current is a flow or movement of these substances in a specific direction. For example, ocean currents or electric currents are common terms that describe the movement of water or electricity.

3. a small change to something in order to make it work better - improvement
This definition refers to the process of making a small change or modification to something to enhance its performance or efficiency. An improvement is often made to fix a problem or make something work better. For instance, if a car is not running smoothly, a mechanic might make some improvements to the engine to enhance its performance.

Task#2:

4. The device’s mission is to catch the ocean’s rubbish.
In this sentence, we need to choose a word that describes the purpose or objective of the device. The most appropriate word from the given list is "mission," as it signifies the specific goal or aim of the device, which is to catch the ocean's rubbish.

5. Water currents make lots of plastic rubbish drift together.
In this sentence, we need to select a word that describes the force or factor responsible for bringing the plastic rubbish together. The suitable word from the list is "currents," as it refers to the movement of water in a particular direction, which can cause the pieces of plastic rubbish to come together.

6. For a school project, Boyan designed a system of floating barriers.
In this sentence, we are looking for a word that describes the objects or elements that Boyan designed for his school project. The word "barriers" fits this description as it represents the objects that were designed to float in the water as a system. These barriers could be used for different purposes, such as blocking the flow of water or capturing rubbish.

I hope this explanation helps you understand the meanings of these words and how they can be applied in different contexts. Please let me know if you have any further questions!