Test #2 Flashcards
What is the relationship between pressure and volume in Boyle’s law?
As the volume of a gas decreases, the pressure of the gas will increase if the temperature remains constant.
What is matter that has a definite volume and a definite shape?
Solid
What is a unit of force?
Newton
How much force must be applied to piston A to lift a car weighing 20,000 N on piston B with a surface area of 5,000 cm²?
1,000,000
What do hydraulic machines operate by?
Applying Pascal’s principle.
How many lenses do microscopes use?
2
What type of mirror has its edges curved away from the object?
Convex mirror
Where do incident rays that are parallel to the principal axis converge after reflecting off a concave mirror?
The focal point.
Where does a farsighted eye focus an image in relation to the retina?
Behind the retina.
Describe the image formed by a plane mirror.
Virtual, upright.
What type of lenses are thick in the middle and thin at the edges?
Convex lens.
What type of mirror are outside rear-view mirrors on automobiles generally?
Convex mirrors.
What do light rays that hit a convex mirror do as they reflect?
Spread outward.
The bowl of a shiny spoon forms an enlarged, upright image similar to that of a ____ mirror
concave mirror
Any smooth surface that reflects light to form an image is an ____
a mirror
What type of light can be used for different types of surgery?
Incandescent light.
What type of material is glass, which transmits light?
Transparent material.
What term describes a material that does not allow light to be transmitted?
Opaque.
What type of light allows waves to only vibrate in one direction?
Polarized light.
What gas is commonly used in lighting devices to make red light?
Neon.
What happens to light waves when they change speed passing from one medium into another?
The light will be refracted.
What color is produced by blending the three primary pigments?
Black.
What is an image of a distant object produced by the refraction of light through air layers of different densities called?
Mirage.
What are the primary pigment colors?
Cyan, magenta, yellow.
What wavelength of light is reflected from a red shirt?
Red.
What type of reflection comes from a smooth surface?
Specular reflection.
What would happen to the volume of a balloon if it floated high in the atmosphere and the pressure on it decreased
Volume will decrease
Which of the following changes requires an input of thermal energy
melting, evaporation, sublimation
Which state change that occurs when a solid becomes a gas without becoming a liquid first?
sublimation
which changes in state require that energy be added to the substance?
melting, evaporation, sublimation
why can a cork float it’s water
because it is less dense than water
the distance between particles is smallest when a substance is in which state
solid
what does viscosity measure
the fluids resistance to flow
As the volume of a gas decreases, the pressure of the gas will ____ if the temperature remains the same
increase
the measure of the average kinetic energy of the particles of a substance is the _____
temperature
