AnswersNC-Physical ScienceUnit Test

Unit Test — Unit test Answers

0 verified answers
1
Free Preview

Which of these indicates that a liquid has transferred thermal energy to the air?

A
The liquid increases in temperature, and its particles lose kinetic energy.
B
The liquid decreases in temperature, and its particles gain kinetic energy.
C
The liquid increases in temperature, and its particles gain kinetic energy.
D
The liquid decreases in temperature, and its particles lose kinetic energy.
2
Free Preview

Evan drew a diagram to illustrate radiation.

Question illustration
A
gases mixing with particles
B
liquid moving through a vacuum
C
moving particles
D
electromagnetic waves
3

Which accurately completes the statement?Conduction involves the transfer of electric charge or ___________ due to the movement of particles.

A
thermal energy
B
light waves
C
protons
D
neutrons
4

A thermogram taken outside a house shows high amounts of thermal energy around the windows but not around the roof.Which conclusion supports the thermogram?

A
The windows and the roof are energy efficient.
B
The windows and the roof are not energy efficient.
C
The windows are not energy efficient, but the roof is energy efficient.
D
The windows are energy efficient, but the roof is not energy efficient.
5

A scientist designed a foam container to help keep frozen foods from melting. Which best explains how the foam works?

A
It removes thermal energy from the air inside the container.
B
It removes thermal energy from the frozen foods inside the container.
C
It reduces the amount of thermal energy that is transferred from inside to outside the container.
D
It reduces the amount of thermal energy that is transferred from outside to inside the container.
6

Which of these results in kinetic energy of an object?

A
position
B
motion
C
mass
D
volume
7

The diagram shows currents that form as water is heated.

Question illustration
A
the air above a wildfire
B
a carton of milk in a refrigerator
C
a snowdrift on a shady mountainside
D
a boulder in a hot desert
8

Which best describes convection?

A
It relies on the collision of particles within or between substances.
B
It occurs in solids, liquids, or gases that are heated.
C
It results when portions of a liquid cool and rise.
D
It is driven by temperature differences within a fluid.
9

Which material most likely gets the warmest when placed in the Sun?

A
white cement
B
beige sand
C
brown mulch
D
yellow pebbles
10

Which describes how radiation moves?

A
Radiation moves from a cooler object to a warmer object
B
Radiation moves from a warmer object to a cooler object
C
Radiation moves from a warm object to an object of the same temperature
D
Radiation moves from a cool object to an object of the same temperature
11

Which material is typically used as a thermal insulator?

A
copper
B
foam
C
ceramic
D
aluminum
12

A student heats a liquid on a burner. What happens to the portion of liquid that first begins to warm?

A
It loses energy.
B
It becomes less dense.
C
It sinks downward.
D
Its molecules get closer together.
13

Carmen is heating some water and trying to measure the temperature of water using a Celsius thermometer. Which measurement can she expect once the water begins to boil?

A
32°C
B
100° C
C
212°C
D
373°C
14

In which of these can convection not occur?

A
gases
B
solids
C
liquids
D
fluids
15

Which shows the formula for converting from degrees Celsius to degrees Fahrenheit?

A
°F = (9/5 × °C) +32
B
°F = 5/9 × (°C – 32)
C
°F = °C – 273
D
°F = °C + 273
16

The diagram shows movement of thermal energy.

Question illustration
A
W and X
B
X and Z
C
Y and Z
D
Z and W
17

This image shows how magma moves through the Earth’s mantle.

Question illustration
A
The magma is cooled and becomes more dense by the core moving it toward the crust.
B
The magma is heated and becomes more dense by the core moving it toward the crust.
C
The magma is cooled and becomes less dense by the core moving it toward the crust.
D
The magma is heated and becomes less dense by the core moving it toward the crust.
18

What must be true about two objects for conduction to take place?

A
The objects must be different temperatures and they must be in contact.
B
The objects must be the same temperature and they must be in contact.
C
The objects must be different temperatures and they must be insulators.
D
The objects must be the same temperature and they must be insulators.
19

Water is boiling in a clear pot, as shown in the picture.

Question illustration
A
They are more spread out and moving faster than those at the surface.
B
They are closer together and moving faster than those at the surface.
C
They are more spread out and moving slower than those at the surface.
D
They are closer together and moving slower than those at the surface.
20

Earl is using his hands to hold a metal pan 10 centimeters above a hot burner. How can this scenario be changed to demonstrate conduction between the pan and the burner?

A
increase the temperature of the burner
B
use a glass pan instead of a metal pan
C
use foam potholders to hold the pan
D
touch the pan to the burner

Did you find these answers helpful?

More from this Course

Quiz
25 verified answers

Introduction to Waves

Assignment
5 verified answers

Assignment

Assignment
4 verified answers

Assignment