Answers2001310 Earth Science Sem 1 - ReevesUnit Test

Unit Test — Unit test Answers

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Four students made a graphic organizer describing the parts of the atom.Which table best describes the parts of the atom?

A
A 3 column table with 3 rows. The first column is labeled particle with entries proton, electron, neutron. The second column is labeled charge with entries positive, 0, negative. The last column is labeled location with entries outside nucleus, outside nucleus, inside nucleus.
Option A
B
A 3 column table with 3 rows. The first column is labeled particle with entries proton, electron, neutron. The second column is labeled charge with entries negative, 0, negative. The last column is labeled location with entries inside nucleus, outside nucleus, inside nucleus.
Option B
C
A 3 column table with 3 rows. The first column is labeled particle with entries proton, electron, neutron. The second column is labeled charge with entries 0, negative, positive. The last column is labeled location with entries outside nucleus, inside nucleus, inside nucleus.
Option C
D
A 3 column table with 3 rows. The first column is labeled particle with entries proton, electron, neutron. The second column is labeled charge with entries positive, negative, 0. The last column is labeled location with entries inside nucleus, outside nucleus, inside nucleus.
Option D
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Which best describes what is occurring when a door is almost closed and rays of light fan out from the small opening?

A
absorption
B
interference
C
refraction
D
diffraction
44

A lab technician needs to clean medical instruments that have been exposed to bacteria. Which electromagnetic wave would be most useful for this task?

A
infrared
B
radio
C
ultraviolet
D
microwave
45

What parts are found in an electric generator? Select 4 options.

A
an armature
B
a battery
C
a permanent magnet
D
an electromagnet
E
brushes
F
slip rings
46

What is released when an excited electron returns to a lower energy state?

A
an isotope
B
a proton
C
electricity
D
electromagnetic radiation
47

What causes the appearance of lines in an emission spectrum?

A
Light is absorbed as an electron moves to a higher energy state.
B
Light is released as an electron moves to a lower energy state.
C
An electron is released as light when it moves to a lower energy state.
D
An electron is released as light when it moves to a higher energy state.
48

The diagram shows an electric motor.

Question illustration
A
W
B
X
C
Y
D
Z
49

Which best describes electromagnetic waves moving from gamma rays to radio waves along the electromagnetic spectrum?

A
Wavelength and frequency decrease.
B
Wavelength and frequency increase.
C
Wavelength increases, and frequency decreases.
D
Wavelength decreases, and frequency increases.
50

Which best describes what happens in an electric generator?

A
Motion causes constantly changing magnetic fields to induce electrical energy.
B
Motion causes constantly changing magnetic fields to induce kinetic energy.
C
Constantly changing magnetic fields lead to motion, which induces electrical energy.
D
Constantly changing magnetic fields lead to motion, which induces kinetic energy.
51

Voices of swimmers at a pool travel 400 m/s through the air and 1,600 m/s underwater. The wavelength changes from 2 m in the air to 8 m underwater. How has the change in media affected the frequency of the wave?

A
It increased.
B
It decreased.
C
It stayed the same.
D
It cannot be calculated.
52

Which best describes why a diamond ring will sometimes sparkle different colors in normal white light?

A
absorption
B
interference
C
refraction
D
destruction
53

Which describes a relationship when calculating the energy of a photon?

A
The energy of the photon is directly proportional to frequency.
B
The energy of the photon is inversely proportional to frequency.
C
As the energy of the photon increases, Planck’s constant increases.
D
As the energy of the photon increases, Planck’s constant decreases.
54

What is the motion of the particles in this kind of wave?

Question illustration
A
The particles will move up and down over large areas.
B
The particles will move up and down over small areas.
C
The particles will move side to side over small areas.
D
The particles will move side to side over large areas.
55

Jenny is trying to describe a wave. Which example would be the best description?

A
a toy car hitting a wall and bouncing back
B
a toy car rear-ending a toy car that then rear-ends another toy car
C
two toy cars driving parallel to each other at the same speed
D
two toy cars driving away from each other at the same speed
56

2 circles with an overlap. The left circled is labeled Longitudinal Wave with further labels parallel motion, like moving a spring up and down. The right circle is labeled Transverse Wave with further labels perpendicular motion, like moving a spring back and forth. In the overlap are labels particles only move a small amount, particles do not move with the wave.

Question illustration
A
“Parallel” and “Perpendicular” are switched.
B
The spring descriptions of motion are switched.
C
Particles travel along the wave in longitudinal waves.
D
Particles move long distances in transverse waves.
57

Which statement applies to transverse waves?

A
The waves have a trough.
B
Particles move great distances.
C
The waves have alternating compressions and expansions.
D
The energy is transferred parallel to the direction of the wave motion.
58

Which statement best describes the ideas of two scientists who studied properties of light?

A
Newton and Maxwell had similar ideas about light being made of particles.
B
Hertz extended Maxwell’s idea that light is produced by the interaction of electric and magnetic fields.
C
Young supported Newton’s idea of the wave theory of light after observing light spread out in all directions.
D
Huygens agreed with Maxwell that light has properties of both particles and waves.
59

This chart shows characteristics of three different waves, all with the same wavelength of 10 m but moving at different frequencies.

Question illustration
A
Wave Y is moving the fastest.
B
Wave X is moving the fastest.
C
All of the waves are moving at the same speed.
D
All of the waves have the same value of wavelengths per second.
60

Which is the correct formula for finding the frequency of an electromagnetic wave?

A
f = c –
Option A
B
f =
Option B
C
f = + c
Option C
D
f =
Option D
61

What is the main difference between the Schrödinger model and the Bohr atomic model?

A
Schrödinger believed that electrons could only exist in orbits, but Bohr stated that electrons could be found anywhere in the atom.
B
Bohr believed electron orbits were circular, but Schrödinger’s equations represent complex shapes describing the probable locations of electrons.
C
The Bohr model did not explain the emission and absorption spectrum, but the energy levels described by Schrödinger explained this property.
D
Bohr believed that the electrons circle the nucleus because positive particles attract negative particles, while Schrödinger believed that an electron was a wave.

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