Introduction to earth science 2
Terms
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- metric system
- data is recorded during an experiment, many times this data will be some sort of measurement. Metric units con measure length, volume, mass, weight, density, and temperature
- length
- usually measured in meters, centimeters, millimeters, and kilometers
- light year
- used to measure distances outside the solar system. Light travels at about 300, 000 km pwr a second- in one year it travels 3.9 strillim kms.
- volume
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the amount of space an object takes up.
liquids- litters of mL
solids measured in cubic centimeters - equation for volume
- length x width x heighth
- mass
- measures the amount of matter in an object usually measured in kg, mg
- weight
- the measure of attraction between 2 objects due to gravity
- what unit is weight measured in?
- newtons (n)
- density
- mass per unit volume
- What is the equation for density?
- mass/ volume
- temperature
- meaured in degrees celcius. Water freezes at 0 degrees celcius and boils at 100 degrees celcius
- What is the formula for changing C-F?
- C1.8 plus 32
- Formula for changing F-C
- -32 x .5555
- dimentional analysis
- teh term for converted one unit of measurement to another
- telescope
- used to view and magnify objects in space. There are a variety of types that detect different types of light
- Electromagnetic Spectrum
- consists of visible and invisible light
- visible light
- this is what is collected by telescopes.
- What colors are considered to be visible light.
- Roy G biv, red, orange,yellow, green, blue, indego, violet
- Invisible light
- consists of x-rays, ultraviolent rays, and radio waves (stars give off both visible and invisible light
- name the 4 telescopes that detect invisible light and what kind of light.
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Radio telescope: collects radio waves from space
X-ray telescope: X-ray of stars in space
Infrared telescope: detects heat energy which is given off by objects in space or on earth
Ultaviolet telescope: detects UV rays - What are the 2 telescopes which collect visible light and what are their definitions
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1. Optical Telescope- collects and focuses visible light from distant objects, they are used frequently in large observatories and there are 2 types.
a. Reflecting Telescope- a series of mirrors collects light. (Use of mirrors means image is backwards.)
b. Refracting Telescope - What is the other telescope which detects visible light
- reflecting telescope a series of mirrors collects light which means the image is backwards.
- micrometer
- a millionth of a meter
- nanometer
- a billionth of a meter
- angstrom
- billionth of a meter