Vocabulary work

 

1. The words given in two columns of the box are mentioned in the text and they have similar meanings. Find and name these pairs.

 

A	B
to follow up	important
moonshine	immense
to liberate	to design
to eject	to delineate
enormous	to seek
to create	to appear
to look for	new
critical	to complete
to emerge	nonsense
recent	to release
to describe	to emit

 

2. Find in the text derivatives of the following words. Think of 4-5 sentences where these derivatives can be used.

mechanics	to collide	to transmute	limit	to differ
atom	to bombard	to discover	to develop	to behave
to lead	nucleus	control	line	circle

 

3. Form collocations using the words of two columns. Each word can be used once only. Use the txt to fulfill the task.

 

to elaborate	results
to incorporate	the world
to publish	energy
to induce	fragments
to astonish	a challenge
to eject	a model
to release	a concept
to patent	quantum mechanics
to seek	a nuclear reaction

 

4. Fill in the blanks using suitable words.

1. Neils Bohr … Rutherford’s atomic model.

2. He thought that the … was associated with the atomic number of an element.

3. A new field of physics … to investigate the powerful core of the atom.

4. The kinetic energy of … particles is greater than that of the bombarding particles.

5. The neutron is one of the …. of atomic nuclei.

6. They discussed the latest … including the discovery of the neutron.

7. He attempted to generate a … reaction.

8. They managed to make it … some of its energy in radioactive decay.

9. He started a set of experiments … elements with neutrons.

 

5. Use the word given in capitals at the end of each line to form a word that fits in the space in the same line.

 

1. He managed to describe the … of orbiting electrons. BEHAVE

2. Scientists working in the field of … physics conducted research into ATOM

the mysteries of the atom.

3. He published his results on the .. of atoms by alpha particles. BOMBARD

4. Chadwick’s … was another important step towards nuclear fission. DISCOVER

5. If a chain reaction of neutron …. split nuclei, COLLIDE

then an immense release of energy would occur.

6. His tool was more compact than a … accelerator. LINE

7. He completed his … treatise on beta decay. THEORY

8. His experiments showed that there were …. energy levels DIFFER

in the neutron.

9. Fermi’s work was an important step in the …. of DEVELOP

nuclear fission.