The variety of shielding gases used in arc welding can be a confusing topic. However, the use of an external shielding gas is a necessary component for some processes, as it is a requirement for surrounding and protecting the arc and molten weld metal from contamination by the atmosphere.
Consonant Digraphs. Second Grade. Spelling/Phonics. Consonant Digraphs Consonant digraphs are two (or three) letters that come together to make one sound. The difference between blends and digraphs is that blends are two letters that make two sounds and digraphs make one sound.onsonant Digraphs. Second Grade. Spelling/Phonics. Consonant Digraphs Consonant digraphs are two (or three) letters that come together to make one sound. The difference between blends and digraphs is that blends are two letters that make two sounds and digraphs make one sound.
A digraph is when a pair of letters come together to make one sound. For example, s + h combine to make the sound we hear at the end of fish. Common consonant digraphs include: ch as in chair, sh as in sheep, th as in think, ck as in duck.he letter 'y' can make a consonant and vowel sound. By playing around with these 26 letters, through phonics, we can learn the 44 sounds (phonemes). For example, we can put ch together to make a new sound as in the word chair. This art of combining 2 letters to form one sound is called a digraph.