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Description
Flashcards by MP LLORENS ESTARELLES, updated more than 1 year ago
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Created by MP LLORENS ESTARELLES
over 3 years ago
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| Question | Answer |
| NATURAL SCIENCES MATTER, MATERIALS AND FORCES | YEAR 4 UNIT 7 |
| Matter | Everything that we can see, smell and touch. |
| The amount of matter in an object. | Mass |
| Volume | How much space an object occupies. |
| Solid | Has got a fixed shape. |
| Takes the shape of the container it is in, cannot be compressed. | Liquid |
| Gas | It has no fixed shape. It can be compressed. It can expand. |
| Colour, taste, smell and texture, are examples of these. | These are properties we can perceive through our senses. |
| Hardness | The property of a material that cannot be scratched easily. Diamonds are hard. Chalk is soft. |
| The property of a material that can be stretched and recovers its shape. | Elasticity A Rubberband is elastic |
| The property of a material that bends well without breaking. | Flexibility Paper or leather are flexible. Glass is not. |
| A material that is difficult to bend. | It is rigid For example, glass. |
| Transparency | Light can pass through it. |
| Opaque | Doesn’t let light through. |
| How easily an object breaks. | Tenacity |
| Force | An action that changes the movement of an object or its shape. |
| At a distance force | Causes an object to change its movement or shape without touching it. |
| A force that causes an object to change its movement or shape by touching it. | Contact Force |
| Gravity | A force that exists between all objects with mass. It causes things to fall to the ground. |
| A force that repels or attracts metal objects. | Magnetism |
| Found in nature. Iron and aluminum are examples. | Minerals |
| The opposite of weakness. | Strength |
| Another word for materials. | Substances |
| Weight | How heavy an object is. |
| Common Materials | Are used daily: wood, plastic, metals, fibres, glass and combustibles. |
| A natural material we get from trees. It is strong and slightly flexible. It's used for making furniture and paper. It can provide light and heat by combustion. | Wood |
| Plastic | It is an _____________material We get it mainly from ___________ There are ___________ types. It's got many uses: __________, _____, ________ |
| They are found in nature in the form of minerals. They are strong and hard. Used to make: tools, ships, aeroplanes, cars ... | Metals |
| Fibres | Are __________ and strong. We use them to make ___________ and then make clothes. Some are ___________: cotton and ________ Some are man-made from petroleum: __________. |
| It is a man-made material. We get it by heating sand and mixing it with minerals. We use it for windows, kitchenware, marbles ... | Glass |
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