8th grade science vocab

Microwave

• EM waves used for radar,cell phones,satellite communication and heating food

• Transparent covering of the front of the eyeball that refracts light

• Cells in the retina that help us see light(black,grays and whites)

• Low energy EM waves used for radio and tv broadcasts

Particles in a compressional wave squeezed together are called......

• Transverse Waves

• Mechanical Waves

• Electromagnetic waves

• Compression

Variable

• A factor that can be altered in an experiment

• Measurement of how much gravity is pulling down an object

• Highest point of a transverse waves

• The variables you keep the same in an experiment to make it fair

SI units of length,volume and mass

• Meter

• Liter

• Gram

• All the above

Roygbiv stands for red,orange,yellow,green,indigo,violet(colors of refracted visible light)

• True

• False

A variable changed by the tester

• Dependent/Responding variable

• Independent/Manipulated variable

What is the difference between qualitative and quantitative observations

• Quantitative Observations use numbers and qualitative observations use your senses

• Quantitative Observations use your sense and Qualitative Observations use numbers

Worldwide method of measuring is called the International System of Units

• True

• False

A guess about the future based on previous knowledge

• Prediction

• Inference

The highest point of a wave

• Crest

• Trough