Sample Initial Temperature (°C) Final Temperature (°C) Amount of Ice Added (grams)
1 20.2 16.0 60
2 48.1 44.2 59.9
3 6.1 1.0 71.1
4 14.6 3.3 122.6
A student adds ice to several samples of water. The results are shown in the table. Which conclusion can be drawn from the results?
(1 point)
Responses
As the amount of ice added increases, the change in temperature increases.
As the amount of ice added increases, the change in temperature increases.
As the temperature increases, the kinetic energy of the water molecules decreases.
As the temperature increases, the kinetic energy of the water molecules decreases.
As the amount of ice added decreases, the temperature decreases.
As the amount of ice added decreases, the temperature decreases.
As the temperature decreases, the kinetic energy of the sample increases.
As the amount of ice added increases, the change in temperature decreases.
A student adds different amounts of ice to four samples of water and records the change in temperature after 30 minutes. What is the independent variable in this investigation?(1 point)
Responses
ice cubes added
ice cubes added
final temperature
final temperature
initial temperature
initial temperature
amount of time
amount of time
The independent variable in this investigation is the amount of ice cubes added.
A student conducts an investigation to show the relationship between temperature and kinetic energy in one phase of matter. What would the graph of this relationship look like?(1 point)
Responses
a horizontal line
a horizontal line
an S-shaped curve
an S-shaped curve
a diagonal line
a diagonal line
a U-shaped curve
A diagonal line would represent the relationship between temperature and kinetic energy in one phase of matter.
Determine if (3,0.75) is a point on the graph of the function y=0.75x−1.5 . Enter 1 for yes. Enter 2 for no.(1 point)
To determine if (3,0.75) is a point on the graph of the function y=0.75x−1.5, we need to substitute the x-coordinate (3) into the equation and see if it gives us the y-coordinate (0.75).
By substituting x=3 into the equation y=0.75x−1.5, we get:
y = 0.75(3) - 1.5
= 2.25 - 1.5
= 0.75
The y-coordinate matches the given y-coordinate of 0.75. Therefore, (3, 0.75) is a point on the graph of the function y=0.75x−1.5.
The answer is 1.