Based on the pattern of movement in the picture, the person __________. a. speed up b. speed down c. constantly moves d. freezing

The volume of a sound is measured in units called ____________. a. Hertz b. decibel c. amplitude d. Hertz / second

The line in the oscilloscope is called _________ a. amplitude b. wavelength c. vibrations d. trace

What does this graph represent? a. constant speed b. acceleration c. not moving d. a and b

A diet that provides all the different kinds of nutrients, and the right amount of energy is called ________________. a. diet b. balanced diet c. nutrients d. balanced

An object that does not vibrate cannot produce a. light b. sound c. heat d. electricity

The number of waves/ vibration that pass a point each second a. frequency b. wavelength c. pitch d. amplitude

A ___________ is an example of a stringed instrument. a. drum set b. trumpet c. flute d. piano

Sound is able to travel faster in solids than in air because the molecules in solid are a. closer together than in air particles b. move faster than air particles c. larger than air molecules d. all of the above

What two measurements are necessary for calculating speed? a. distance and mass b. mass and time c. distance and time d. temperature and distance

When a sound gets louder, what measurement gets bigger? a. frequency b. wavelength c. amplitude d. none of the above

Fish, meat, nuts and pulses contain a lot of _________. a. carbohydrates b. proteins c. fats d. minerals

The image shows that, in Benedict test, test tube ______ has the most sugar. a. Test tube 1 b. Test tube 2 c. Test tube 3 d. Test tube 4