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| During a controlled experiment, if you purposely change the temperature to test a hypothesis the temperature is called the |
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| The fossils of dinosaurs of the same species were found in Siberia and in England. Determining that the rocks where each of these fossils were found are approximately the same age is an example of |
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| What happens to the particles of a substance when thermal energy is added to the substance? |
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| its particles move faster |
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| are free to move around one another but still touch |
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| Which of the following is true about scientists? |
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| they tend to come from all kinds of backgrounds |
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| In a system, when energy is transformed from one form to another, |
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| the total energy is conserved |
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| Energy is measured in units called |
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| Heated air moved from baseboard heaters to the rest of a room in a process called |
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| The electromagnetic waves with the highest frequencies are called |
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| Which of the following objects has no kinetic energy? |
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| a picture hanging on a wall |
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| What happens when light passes from air into water? |
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| Clara placed an empty mug on the table and poured hot tea into the mug. When she went to pick up the mug it was too hot to hold. Which type of heat transfer occurred between the tea and the mug? |
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| Heat is transferred from one particle of matter to another within an object or between two objects in a process called |
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| In which state of matter are particles packed tightly together in fixed positions? |
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| A measure of the average kinetic energy of the individual particles in an object is called |
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| When scientists put things into categories or group together items that are alike in some way, they are |
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| When observations deal with amounts or numbers they are called |
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| quantitative observations |
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| Which is an example of using ethics in experiments? |
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| considering the environmental impacts of an experiment |
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| The law of conservation of energy states that when one form of energy is transformed to another, |
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| no energy is destroyed in the process |
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| Nearly 2,000 years ago the astronomer, Ptolemy, believed that all objects in space, including the sun, revolved around Earth. 500 years ago, Nicolaus Copernicus made observations showing that Earth and other planets revolved around the sun, which refuted Ptolemy's arguement. This is an example of how scientific knowledge |
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| changes as a result of new evidence |
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| Which describes how opinion and scientific evidence are related? |
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| an opinion is an idea that may be formed from evidence |
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| Why would a scientist reject a scientific theory? |
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| new evidence contradicts it |
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| The force of gravity on a person or object on the surface of a planet is called |
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| Which particles in atoms have a negative charge? |
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| Why is it useful for scientists to develop models for the structure of atoms? |
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| atoms are too small to study directly |
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| only from warmer objects to colder ones |
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| Why is it imprtant for people to understand scientific principles and to think scientifically? |
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| it allows people to make informed decisions |
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| The smallest particle that can be considered an element is called a (n)? |
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| When you rub your hands together on a cold day, you use friction to transform |
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| mechanical energy into thermal energy |
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| The energy associated with motion is called |
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| Which of the following would be considered a good model of Earth? |
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| A solid, such as bismuth, has |
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| a definite shape and a definite volume |
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| Which of the following has kinetic energy? |
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| Which of the following is a characteristic of the scientific method? |
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| science is based on objective analysis of experimental data |
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| Which state of matter undergoes changes in volume most easily? |
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| The basic SI unit of length is the |
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| The range of electromagnetic waves placed in a certain order is called the |
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| All elements are made of basic particles called |
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| Which electromagnetic waves have the longest wavelengths and lowest frequencies? |
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| You are investigating a certain plant's ability to growq. All of the following data will be helpful except the |
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| scientific name of the plant |
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| The transfer of energy by electomagnetic waves is called |
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| Which has the most thermal energy? |
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| 2-liters of water at 80 degrees C |
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| The bending of light rays as they enter a new medium is called |
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| You are investigating the numbers and types of birds in your neighborhood. If you watch a bird feeder to see which birds appear, you are |
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| Which of the following statements about mass and weight is true? |
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| weight measures the force of gravity on an object and mass measures the amount of matter an object contains |
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| Which parts of the atom move around the nucleus? |
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| In an atom, the number of protons equals the number of |
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| Joe decides that cereal is the best breakfast because he thinks cereal tastes better than other breakfast foods. Joe is being |
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| At the end of a roller coaster ride the brakes are applied and the coaster quickly comes to a stop. In this example the kinectic energy that the coaster had is converted to |
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| Which of the following would you measure using a balance? |
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