Chapter Review Chapter 6,7 Grade 4 Science Chose the correct answer to fill the sentences: ( Subsoil Greenish- Metamorphic- Feldspar Slate Waxy Limestone- Clay- Lava Violet ) 1- Granite contains mica, quartz, and 2- Chalk is made of. 3- Amethyst quartz has a..color from the element iron. 4- Opal has a..luster. 5- Pyrite has -black streak. 6- There are three types of rocks igneous, sedimentary, and. 7- Obsidian is an igneous rock that forms from.. 8- When shale is exposed to heat and pressure it changes to. 9- There are three layers of soil topsoil,.., and bedrock. 10- There are three main types of soil,silt, and sand. Complete the sentences: 1-..is an even mixture of all three kinds of soil. 2- A natural resource is something that comes from. 3- The main types of energy resources and.. 4- Fossils are..of a plant or animal that died a very long time. 5- Geologists use..to get to coal below the ground. 6-..is used to make things like 7- The fuel most widely used by nuclear power plants is 8- Nuclear energy used to produce about % of the world s electricity. 9-.are dangerous and can cut off roads and railway lines. 10- If an earthquake occurs near the.,it can destroy beaches. 11- The place under the crust where an earthquake begins is called. 12- About volcanos have erupted during our known history. 13- The temperature of fresh lava ranges from..to.. 14-.valleys are deep and narrow, while.valleys are wide and their bottom is flat. 15-..are often used for farming. 16 The.of grand canyon are made up of different rock layers.
Match each term with its definition : 1- Luster.describes how easily the mineral can be scratched. 2- Cleavage.is a color of the powder a mineral leaves. 3- Igneous rocks.is a solid object that forms naturally. 4- Metamorphic rocks.is a mixture of non-living things and decayed onceliving things. 5- Sedimentary rocks are resources that can be replaced as they are used. 6- Hardness.is when a mineral breaks along a smooth flat plane. 7- A rock.are rocks that have changed as the result of great heat and pressure. 8 The rock cycle.happens when harmful materials is added to the Land, air, or water. 9 Streak describes how the surface of a mineral reflects light. 10- Soil the process by which rocks change. 11- Renewable resources.form when magma cools and turns to solid rock. 12- Pollination.are kinds of rocks that form from hardened layers of sediment. Write true or false: 1- When rock heats up it expands, and when it cools it contracts. 2- A fault is a break in the rock of Earth s mantle. 3- Smoke and fumes from chimneys cause air pollination. 4- To recycle means to make used materials from new things. 5- Gneiss is a metamorphic rock. 6- Carrots grow best in clay soil. 7- Solar energy is energy that comes from the sun. 8- Geothermal energy is energy that comes from heat outside Earth.
Chose The Correct Answer : 1- Granite contains three kinds of minerals mica, quartz, and.. A- limestone B- graphite C- chromite D- feldspar 2- Fluorite glow when placed under an light. A- red B- ultraviolet C- yellow D- white 3- Steel tends to rust, so..is added to prevent rusting. A- chromium. B- iron C- graphite. D- quartz. 4- Gold has a luster. A- waxy. B- glassy. C- metallic. D- bad. 5- The green color of the mineral comes from the element copper. A- talc. B- malachite. C- topaz. D- amethyst. 6- Pyrite has greenish-black. A- Cleavage. B- hardness. C- color. D- streak. 7-.forms from lava filled with lots of gases. A- Pumice. B- Granite. C- Basalt. D- Gneiss. 8- Sandstone is a soft stone that is made up of bits of A- limestone. B- quartz.
C- slate. D- obsidian. 9- Any rock that melts and cools can become..rock. A- Sedimentary. B- metamorphic. C- igneous. D- hard. 10-..is the decomposing remains of once-living plants and animals. A- Humus. B- Mineral. C- Rock. D- Soil. 11-..soil can hold a lot of water. A- Sand. B- Clay. C- Silt. D- Chocolate. 12- Silt soil is better for growing. A- Potatoes. B- carrots. C- strawberries. D- irises. 13- Geraniums grow best in..soil. A- Silt. B- yellow. C- clay. D- sand. 14- Fossils form between layers of..rocks. A- Sedimentary. B- igneous. C- metamorphic. D- fire. 15- More than..of the world s electricity comes from coal. A- one-fourth. B- one-third. C- two-third. D- two-fourth. 16-.traps heat in the atmosphere and makes Earth warmer.
A- Carbon monoxide. B- Oxygen. C- Hydrogen. D- Carbon dioxide. 17- The of the continents is almost three times as thick as under the oceans. A- mantle. B- outer core. C- crust. D- inner core. 18- A.is a wide low flat area on Earth s surface. A- plain B- plateau C- valley D- hill 19- The grand canyon is the biggest canyon in the United States. It is.deep. A- 2 miles B- 1 mile C- 3 miles D- 10 miles 20- More than.percent of Earth s water is salt water. A- 79 B- 69 C- 59 D- 97 21- In Mohs scale apatite can scratch. A- fluorite. B- feldspar. C- quartz. D- topaz. 22- In Mohs scale calcite can scratch.. A- Corundum. B- diamond. C- gypsum. D- quartz. 23- In Mohs scale quartz can scratch.. A- Topaz. B- talc. C- diamond. D- corundum. 24- In Mohs scale gypsum can scratch.
A- apatite B- feldspar C- fluorite. D- talc. 25- In Mohs scale feldspar can scratch. A- quartz. B-feldspar. C- topaz. D- corundum. 26- Rainwater mixes with.. in the air, forming acid A- Oxygen B- hydrogen C- carbon dioxide D- magnesium. 27- In Richter Scale the potential hazard has the value 8. A- Minor B- Noteworthy C- Far-Reaching D- Outstanding 28- In Richter Scale the potential hazard has the value 10. A- Extraordinary B- High C- Intermediate D- Low. 29- In Richter Scale the potential hazard has the value 4. A- Low B- Insignificant C- Minor D- Moderate 30- In Richter Scale the potential hazard has the value 1. A- Low B- Insignificant C- Minor D- Moderate