rock

Everyday

1. The hard, solid material that the Earth's surface is made of. tree →
2. A large stone: "sitting on a rock". tree →
3. A kind of loud popular music with guitars and drums: "rock music". tree →
4. As a verb, to move gently from side to side or back and forth: "rock the baby". tree →
5. As a verb, to shake or shock: "The earthquake rocked the town." tree →
6. A hard sweet in a stick (British seaside rock). tree →

In the lessons

In science, there are three kinds of rock: igneous (from cooled lava), sedimentary (layers pressed together, may hold fossils) and metamorphic (changed by heat and pressure); rocks slowly wear into soil and sand. In safety: rocks at the sea are slippery; don't climb loose rocks. Phrases: rock pool, rock music, solid as a rock, rock bottom, on the rocks.

Examples

• This rock has a fossil in it. tree →
• We sat on a big rock. tree →
• Rocks slowly break down into sand. tree →
• Granite is a very hard rock. tree →
• Rock the baby to sleep. tree →
• The earthquake rocked the city. tree →
• Look for crabs in the rock pools. tree →
• My dad loves rock music. tree →
• The ship had struck upon a rock. tree →

Note

"A rock" is countable; "rock" as material is uncountable. In American English, "rock" can mean any stone, even a small one. "Rocking chair" rocks back and forth.

In Jewish tradition

In Deuteronomy "the Rock" is a name for God, meaning a strong, steady protector. Rocks also appear as real stones, like the one Moses struck for water.

Interpretation. Jewish tradition keeps "Tzur," Rock, as a name for God, and it is sung in the song "Tzur Mishelo" at the Sabbath table.

Examples

• For their rock is not as our Rock, even our enemies themselves being judges. (Torah DEU.32.31, JPS 1917) tree →
• And it is said: Where are their gods, the rock in whom they trusted; (Torah DEU.32.37, JPS 1917) tree →
• Of the Rock that begot thee thou wast unmindful, and didst forget God that bore thee. (Torah DEU.32.18, JPS 1917) tree →
• Do horses run upon the rocks? (Prophets AMO.6.12, JPS 1917) tree →
• And who is a Rock, except our God? (Writings PSA.18.32, JPS 1917) tree →
• Yea, there is no Rock; I know not any. (Prophets ISA.44.8, JPS 1917) tree →

Note

"A rock" is countable; "rock" as material is uncountable. In American English, "rock" can mean any stone, even a small one. "Rocking chair" rocks back and forth.