question 1 options:
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Biology, 06.10.2019 21:30 delanorpalmer24
What is the electrical current passing through this ammeter? 1
question 1 options:
7.5 amps
8.5 amps
5 amps
10 amps
question 2 (10 points) question 2 unsaved
which of the measurements would be the most in determining the wavelength?
2
question 2 options:
w
x
y
z
question 3 (10 points) question 3 unsaved
the diagram shows the magnetic field surrounding a bar magnet. the closer together the lines of force, the stronger the magnetic field. according to the diagram, where is the magnetic field the strongest?
3
question 3 options:
around the north pole
around the south pole
around both poles
in the center of the magnet
question 4 (10 points) question 4 unsaved
alexandra was preparing to go on a hike in the woods. she gathered the equipment she would need and placed it on the counter. by chance, she placed her compass near an electrical outlet. although the compass was not moving, the compass needle turned
question 4 options:
the electrical current in the outlet produced a magnetic field.
the compass could only be used outdoors.
the kitchen counter was made of a magnetic substance.
the kitchen had a microwave oven.
question 5 (10 points) question 5 unsaved
the picture shows an experiment used to determine the effect of using more nails in the core of an electromagnet. which of the following would make this a better designed experiment?
5
question 5 options:
using a different number of batteries for each electromagnet.
using the same number of turns of wire for each electromagnet.
inserting an ammeter in each circuit between the battery and the nails.
using a different size battery for each electromagnet.
question 6 (10 points) question 6 unsaved
ms. markas takes a thermos bottle filled with hot coffee to work each day. the thermos bottle keeps the coffee hot by
question 6 options:
using a battery-powered heating element.
collecting solar heat energy.
recirculating hot air inside.
slowing heat transfer from the inside to the outside of the container.
question 7 (10 points) question 7 unsaved
which of the following would absorb the most sunlight?
question 7 options:
a white t-shirt
a yellow t-shirt
a black t-shirt
an orange t-shirt
question 8 (10 points) question 8 unsaved
according to the diagrams, long
question 8 options:
travel more slowly than short wavelengths.
have a greater frequency than short wavelengths.
diffract around objects more easily than shorter wavelengths.
are able to generate far more power than are short wavelengths.
question 9 (10 points) question 9 unsaved
which of the following would be the best way to determine a glass block's index of refraction?
question 9 options:
9a
9b
9c
9d
question 10 (10 points) question 10 unsaved
joseph studied whether different materials can block certain electromagnetic waves by testing television reception in different parts of the house. at each part of the house, joseph used a different antenna. the experiment could have been improved by
question 10 options:
testing reception of a different channel during each trial.
using the same antenna during each trial.
measuring the antenna length in centimeters.
measuring the distance to the television station.
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