Science exam

number of vibrations past a point in a given amount of time

• distance from crest to crest
• long wavelength-low frequency- low pitch
• short wavelength- high frequency-high pitch

• a distanse which results in the moverment of molecules
• -must have a medium
• -travels longitudinal or compressional

distance from baseline to crest

unit used to measure the loudness of a sound

reflection of a sound wave

• when two or more sound waves interact
• -constructive sound waves reinforce on another
• -destructive the sounds waves cancel one another out resulting in beats

fundamental tone plus overtones

sound vibration that have a regular pattern

sound waves that have an irregular pattern

animals and man to detect underwater objects

sounds below the range of human hearing

sounds above the range of human hearing

apparent change in the flequency of a sound as the distance between the source of the sound and the receiver of the sound changes

has a single correct answer

can be answered in a number of ways

• What do you see happening?
• What is puzzling about you observed?
• What have you seen that is like this?

• what are some of the changes you noticed?
• in what order did the events happen?
• why do you think there were differences in each group's measurement?
• were the observation of all groups the same? why or why not?

• did you notice any patterns in your observation
• what do you already know that might help you explain what a happened
• what principles or laws can you think of that might explain what happened

• what might happen if
• how can we use this principle to explain

incorpate an attitude of intital acceptance of student responses and ideas

• build on an idea suggested by one or more students
• clarify student ideas by restarting the idea in simpler terms
• compare and contrst ideas presented by two or more students

• ask questions that build on student ideas
• ask students to clarify their response by giving more information, explaining a term used, or restatating the response in other words

• increase your wait time and your wait-time two
• gradually fade you questioning support to encourage students to formulate their own question
• help students to develop cognigively and construct their own concepts and understanding

Noble gas

• full outer shell
• except for H₂

alkaian earth metal