book extras

• objects in the mirror are closer than they appear

  driving mirrors
• in contrast to the telescope, the objective is a small lens with a short focal length

  microscope
• the correct way to use it is to hold it as close to your eyes as possible

  magnifying glass
• the image formed by diverging lens is virtual
• the image formed by converging lens is real
• what can produce electric energy for our homes?

  generator
• what pole of compass needle points to a south pole of a magnet?

  north pole
• magnetism is due to the motion of electrons as they (number lang)

  1. move around the nucleus
  2. spin on their axes
  3. both of these
  4. none of these

  3
• electromagnetic induction occurs in a coil when there is a change in _ (number lang)

  1. electric field intensity in the coil
  2. magnetic field intensity in the coil
  3. voltage in the coil
  4. the coil polarity

  1
• outside a magnet, magnetic field lines are conventionally drawn from _ (number lang)

  1. north to south
  2. south to north
  3. either way
  4. depends on you

  1
• moving electric charges will interact with _ (number lang)

  1. an electric field
  2. a magnetic field
  3. both of these
  4. none of these

  3
• which of the following male reproductive part carries sperms out of the testes? (number lang)

  1. epididymis
  2. penis
  3. urethra
  4. vas deferens

  4
• which part of the male reproductive system are sperms temporarily stored? (number lang)

  1. epididymis
  2. penis
  3. urethra
  4. vas deferens

  1
• which phase in the menstrual cycle does secondary oocyte get released from the ovary? (number lang)

  1. endometrium
  2. follicular
  3. luteal
  4. ovulation

  4
• which of the following embryonic development occurs after the cleavages have fused group of cells? (number lang)

  1. blastocyst
  2. morula
  3. placenta
  4. zygote

  1
• in males, which of the following hormones stimulate sperm production? (number lang)

  1. estrogen
  2. FSH
  3. prolactin
  4. testosterone

  2
• which of the following are huge wheel that rotate when pushed by water, wind, or steam? (number lang)

  1. cars
  2. magnets
  3. motors
  4. turbines

  4
• in a simple electric motor, like poles of magnets repel and unlike poles of the magnets attract and this causes the coil to rotate, the electrical energy changes to what form? (number lang)

  1. chemical
  2. light
  3. mechanical
  4. sound

  3
• which of the following is formed when a wire in an electric circuit is wrapped around an iron producing a magnetic field? (number lang)

  1. bar magnet
  2. electromagnet
  3. generator
  4. motor

  2
• which of the following produces an electric current when a coil of wire wrapped around an iron is rotated near a magnet? (number lang)

  1. car
  2. generator
  3. magnet
  4. motor

  2
• which instrument uses a single converging lens with the object placed just inside the focal point? (number lang)

  1. camera
  2. compound microscope
  3. magnifying glass
  4. telescope

  3
• which of the following is found on a camera to produce a real, inverted, and diminished film? (number lang)

  1. converging lens
  2. counter lens
  3. diverging lens
  4. fiber lens

  3
• Which of these explains why a student can see her reflection on a computer screen when the screen is turned off? (number lang)

  1. The glass allows light to be transmitted through it.
  2. Computers produce light when they are being used.
  3. Black objects absorb most of the light striking them.
  4. Smooth, shiny objects reflect a great amount of light.

  4
• What type of mirror is used as side mirrors in cars that carry this message: "Objects are closer than they appear"? (number lang)

  1. concave
  2. convex
  3. parabolic
  4. plane

  2
• What type of image will a convex mirror produce always? (number lang)

  1. virtual, upright, and larger
  2. virtual, upright, and smaller
  3. virtual, upright, and same size
  4. real, upside down, and smaller

  2
• What type of image will a concave lens produce always? (number lang)

  1. real, inverted, and larger
  2. virtual, upright, and larger
  3. real, inverted, and smaller
  4. virtual, upright, and smaller

  2
• what type of lens is a magnifying glass? (number lang)

  1. thin diverging lens
  2. thick diverging lens
  3. thin converging lens
  4. thick converging lens

  3
• which of the following examples does not use a convex lens? (number lang)

  1. mirrors
  2. telescope
  3. microscope
  4. none of these

  4
• a student sees a mirror image of a tree in a pond on a very still day. what happens to the light striking the surface of the water, which enables the student to see a mirror image of the tree in the pond? (number lang)

  1. light is absorbed
  2. light bounces off
  3. light bends downward
  4. light becomes brighter

  2
• the image produced by a convex mirror of an erect object in front of the mirror is always: (number lang)

  1. real, erect, and larger than the object
  2. real, erect, and smaller than the object
  3. virtual, erect, and larger than the object
  4. virtual, erect, and smaller than the object

  4
• an erect object is located between a concave mirror and its focal point. its image is larger than the object. which of the following completely describes the image? (number lang)

  1. real and erect
  2. virtual and erect
  3. real and inverted
  4. virtual and inverted

  2
• how will you describe your image if you stand in front of a plane mirror? (number lang)

  1. real, erect, and smaller than you
  2. virtual, erect, and smaller than you
  3. real, erect, and same size as you
  4. virtual, erect, and same size as you

  3
• which objects refract light energy? (number lang)

  1. lens, prism, and mirror
  2. shiny object, lens, and mirror
  3. lens, prism, and passing through water
  4. mirror, lens, and passing through water

  3
• which objects reflect light energy? (number lang)

  1. lens, prism, and water
  2. lens, prism, and mirror
  3. lens, prism, and shiny objects
  4. mirror, shiny objects, and the surface of water

  4
• which of the following best defines the "normal" direction as used in the laws of reflection and refraction? (number lang)

  1. along the incident ray
  2. tangent to the interface
  3. any convenient direction
  4. perpendicular to the interface

  4
• which electromagnetic waves has the longest wavelength, but are often used to transmit data even in computer networks? (number lang)

  1. x-ray
  2. microwaves
  3. visible light
  4. radio waves
  5. gamma waves
  6. ultraviolet waves

  4
• which of these electromagnetic waves enable humans to see? (number lang)

  1. x-ray
  2. microwaves
  3. visible light
  4. radio waves
  5. gamma waves
  6. ultraviolet waves

  3
• which electromagnetic waves have the shortest wavelength and are used in taking images of diagnostic medicine? (number lang)

  1. x-ray
  2. microwaves
  3. visible light
  4. radio waves
  5. gamma waves
  6. ultraviolet waves

  5
• which of these em waves are used to take pictures of bones in the body because they penetrate soft tissue like skin and muscle? (number lang)

  1. x-ray
  2. microwaves
  3. visible light
  4. radio waves
  5. gamma waves
  6. ultraviolet waves

  1
• which em wave is useful in communication because it can penetrate clouds, smoke, and heavy rain? (number lang)

  1. x-ray
  2. microwaves
  3. visible light
  4. radio waves
  5. gamma waves
  6. ultraviolet waves

  2