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Science Spring Semester Test
| Question | Answer |
|---|---|
| Mass and weight are different, why? | Mass is the amount of matter an object contains. Weight depends on gravity. |
| The factor that may change in response to the independent variable is the? | dependent variable |
| Products that help people meet their needs or solve practical problems are examples of? | technology |
| _______ is anything that has mass and takes up space. | Matter |
| An ____ is a pure substance that cannot be broken down into any other substance by a chemical or physical change. | Element |
| The smallest possible piece of matter is the? | Atom |
| What is the difference between a chemical and physical change? | A chemical change becomes a new substance and physical change only changes appearance. |
| State the law of conservation of mass. | Matter is never lost, gained, created, or destroyed. |
| The ability to do work or cause change is? | energy |
| Albert Einstein's theory of _____ stated that energy can sometimes be created by destroying matter. | relativity |
| A change from one form of energy into another is an energy? | transfer |
| Elastic potential energy is associated with objects that can be ____ or _______. | stretched (or) compressed |
| _____ transforms mechanical energy to thermal energy. | Friction |
| Stored energy that results from position or shape of an object is called ____ energy. | potential |
| Energy is measured in? | Joules |
| The energy that an object has due to its motion is called _____ energy. | kinetic |
| The kinetic energy of an object depends on both its mass and its ______ | velocity |
| The law of conservation of energy states that when one form of energy is transformed to another, no energy is ___ in the process. According to the law of conservation of energy, energy cannot be ___ or destroyed. | losted or created |
| Charges that are the same ___ each other. Charges that are different ___ each other. | repel and attract |
| Ohms law says that the ____ is equal to the ___ divided by the ____. | resistance, voltage, and current |
| Electrical signals is the human body control ___, _____, and _______. | breathing, heartbeat, and muscle movement |
| An organism's ability to maintain stable internal conditions is called? | Homeostasis |
| Cells are often organized into tissues, ____, and organ systems. | organs |
| A structure that is found in plant cells but not in animal cells is a? | cell wall |
| A group of organisms that can mate with each other and produce offspring that can also mate and reproduce is called a? | species |
| An organism is a(n) _____ if it can manufacture its own food. | plants |
| The basic unit of structure and function in living things are called? | cells |
| Chloroplasts are found only in the cells of ____ and some other organisms. | plants |
| Food, ___, living space, and stable internal conditions are basic needs of living things. | water |
| Rest of Problems to do...... | 94, 95, 96, 97, 98, 99, and 100. |
Created by:
Kylee =)
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