Test #2

Question 1

What is the relationship between pressure and volume in Boyle’s law?

Answer 1

As the volume of a gas decreases, the pressure of the gas will increase if the temperature remains constant.

Question 2

What is matter that has a definite volume and a definite shape?

Answer 2

Solid

Question 3

What is a unit of force?

Answer 3

Newton

Question 4

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?

Answer 4

1,000,000

Question 5

What do hydraulic machines operate by?

Answer 5

Applying Pascal’s principle.

Question 6

How many lenses do microscopes use?

Answer 6

2

Question 7

What type of mirror has its edges curved away from the object?

Answer 7

Convex mirror

Question 8

Where do incident rays that are parallel to the principal axis converge after reflecting off a concave mirror?

Answer 8

The focal point.

Question 9

Where does a farsighted eye focus an image in relation to the retina?

Answer 9

Behind the retina.

Question 10

Describe the image formed by a plane mirror.

Answer 10

Virtual, upright.

Question 11

What type of lenses are thick in the middle and thin at the edges?

Answer 11

Convex lens.

Question 12

What type of mirror are outside rear-view mirrors on automobiles generally?

Answer 12

Convex mirrors.

Question 13

What do light rays that hit a convex mirror do as they reflect?

Answer 13

Spread outward.

Question 14

The bowl of a shiny spoon forms an enlarged, upright image similar to that of a ____ mirror

Answer 14

concave mirror

Question 15

Any smooth surface that reflects light to form an image is an ____

Answer 15

a mirror

Question 16

What type of light can be used for different types of surgery?

Answer 16

Incandescent light.

Question 17

What type of material is glass, which transmits light?

Answer 17

Transparent material.

Question 18

What term describes a material that does not allow light to be transmitted?

Answer 18

Opaque.

Question 19

What type of light allows waves to only vibrate in one direction?

Answer 19

Polarized light.

Question 20

What gas is commonly used in lighting devices to make red light?

Answer 20

Neon.

Question 21

What happens to light waves when they change speed passing from one medium into another?

Answer 21

The light will be refracted.

Question 22

What color is produced by blending the three primary pigments?

Answer 22

Black.

Question 23

What is an image of a distant object produced by the refraction of light through air layers of different densities called?

Answer 23

Mirage.

Question 24

What are the primary pigment colors?

Answer 24

Cyan, magenta, yellow.

Question 25

What wavelength of light is reflected from a red shirt?

Answer 25

Red.

Question 26

What type of reflection comes from a smooth surface?

Answer 26

Specular reflection.

Question 27

What would happen to the volume of a balloon if it floated high in the atmosphere and the pressure on it decreased

Answer 27

Volume will decrease

Question 28

Which of the following changes requires an input of thermal energy

Answer 28

melting, evaporation, sublimation

Question 29

Which state change that occurs when a solid becomes a gas without becoming a liquid first?

Answer 29

sublimation

Question 30

which changes in state require that energy be added to the substance?

Answer 30

melting, evaporation, sublimation

Question 31

why can a cork float it’s water

Answer 31

because it is less dense than water

Question 32

the distance between particles is smallest when a substance is in which state

Answer 32

solid

Question 33

what does viscosity measure

Answer 33

the fluids resistance to flow

Question 34

As the volume of a gas decreases, the pressure of the gas will ____ if the temperature remains the same

Answer 34

increase

Question 35

the measure of the average kinetic energy of the particles of a substance is the _____

Answer 35

temperature