Page 15 - 4571

4. If the resulting sedimentary rock is buried deep within Earth and involved in the
dynamics of mountain building, it will be subjected to great pressures and intense
heat.
5. When metamorphic rock is subjected to additional pressure changes or to still
higher temperatures, it will melt, creating magma.

Grammar focus
The Degrees of comparison of adjectives

Task 1. Read the following sentences, translate them into Ukrainian. Pay
attention to the degrees of comparison of the adjectives in the sentences.
1. The thickness of oceanic lithosphere is age dependent. The older (cooler) it is, the
greater its thickness.
2. The Antarctic and African plates are almost entirely bounded by spreading centers
and hence are growing larger.
3. As long as temperatures within the interior of our planet remain significantly
higher than those at the surface.
4. By contrast, some metallic minerals such as pyrite, native copper, and magnetite
are more than twice as dense and thus have more than twice the specific gravity as
quartz.
5. One of the largest and most studied of all sills in the United States is the Palisades
Sill.
6. As a general rule, the hybrid covalent bonds between silicon and oxygen are
stronger
7. One of the simplest silicate structures consists of independent tetrahedra that have
their four oxygen ions bonded to positive ions.
8. Minerals with three-dimensional structures in which all four oxygen ions are
shared have the highest silicon content. Minerals composed of independent
tetrahedra have the lowest.
9. As a general rule, the hybrid covalent bonds between silicon and oxygen are
stronger
10. Because other mineral groups are far less abundant in Earth’s crust than the
silicates,

Task 2. Form the degrees of comparison of the given adjectives. Build up
your own sentences with the adjectives. Translate the adjectives into Ukrainian.
Can all the adjectives form the degrees of comparison?
Ambiguous, misleading, measurable, weak, conspicuous, flat, radioactive, poor,
multiple, pink, random, hard, regular, transparent, common, different, large, specific.

Discussion
Task 1. Read and memorize the following words:
relatively - відносно solid – твердий щільний
crust - земна кора; поверхові uppermost – самий верхній, вищий
відкладення
to be composed of – складатися з stiff – твердий, в’язкий, густий,
щільний
homogeneous - однорідний gradual – поступовий, послідовний
extend – простягатися, поширюватися compound – сполука, суміш

14