You observe your friend rub a balloon on their wool sweater and then stick it to the wall. To investigate, you set up an experiment to test whether other objects will respond in the same way when you rub them against a sweater. What is the test variable in your experiment?

The number of times you rubbed the object on the sweater
The observation that the object sticks to the wall
The sweater you use to rub against the objects
The type of objects you are testing in the experiment

Answers

Answer 1

Answer:

The sweater you use to rub against the object

Explanation:

The material can change the the outcome

Related Questions

You observe that the hair on your head stands up when a charged balloon is brought near without touching your head. Based on this observation, you write down the following question and steps to an experiment.

Can two charged objects be attracted to each other without touching?

Step #1: Bring the charged balloon 10 cm from your head.
Step #2: Charge the balloon by rubbing it against a cloth.
Step #3: Record your observation.
Step #4: Bring the charged balloon 5 cm from your head.
Step #5: Record your observation.

What revision could you make to improve the experiment?

Remove the fifth step, you do not need to make multiple observations in an experiment.
Reverse the first two steps so that you charge the balloon before you bring it close to your head.
Reverse the second and third steps so you record your observation before you charge the balloon.
Swap steps two and four, you do not need to charge the balloon until the end of the experiment.

Answers

Answer:

You reverse the first and second steps.

Explanation:

The balloon won't do anything until it is charged.

Answer:

Reverse the first two steps so that you charge the balloon before you bring it close to your head.

Explanation:

i just took the test it is correct all credits to the person who answered it before me <3 stay safe

Please help! Can someone give me answers for 2.08 Graded Assignment: Boiling and Melting Points Exploration for 8th grade science

Here are the questions
(I couldn't make the graph)

1. Looking at the line plots on your graph, describe how boiling point and melting point vary with respect to atomic number.

2. Now look at the segment of the graph between the two data points marked with black squares. Describe how the boiling point and melting point plots behave between these points. Be as specific as possible.

3. On your graph, the data points between the black squares are data for elements with atomic numbers 3 through 9. Locate these elements on your periodic table. What term or description would you use to identify these elements with respect to the periodic table?

4. Now look at the green lines you created by connecting the three boiling point data points and the three melting point data points. For each of these lines, describe any trends you see.

5. Locate the elements on your periodic table that you circled in green on your graph. What term or description would you use to identify these elements with respect to the periodic table?

6. After reviewing your answers to questions 2 and 4 above, would you define boiling point and melting point as a periodic table family trend (vertical groups), period trend (horizontal rows), or neither? Explain your answer.

7. Using the room temperature line (orange line) and your periodic table, make lists that identify the state of matter (gas, liquid, or solid) in which each element you plotted exists at room temperature. Explain your answers.

Answers

Answer:

Explanation:

Please help! Can someone give me answers for 2.08 Graded Assignment: Boiling and Melting Points Exploration for 8th grade science

Here are the questions

(I couldn't make the graph)

1. Looking at the line plots on your graph, describe how boiling point and melting point vary with respect to atomic number.

2. Now look at the segment of the graph between the two data points marked with black squares. Describe how the boiling point and melting point plots behave between these points. Be as specific as possible.

3. On your graph, the data points between the black squares are data for elements with atomic numbers 3 through 9. Locate these elements on your periodic table. What term or description would you use to identify these elements with respect to the periodic table?

4. Now look at the green lines you created by connecting the three boiling point data points and the three melting point data points. For each of these lines, describe any trends you see.

5. Locate the elements on your periodic table that you circled in green on your graph. What term or description would you use to identify these elements with respect to the periodic table?

6. After reviewing your answers to questions 2 and 4 above, would you define boiling point and melting point as a periodic table family trend (vertical groups), period trend (horizontal rows), or neither? Explain your answer.

7. Using the room temperature line (orange line) and your periodic table, make lists that identify the state of matter (gas, liquid, or solid) in which each element you plotted exists at room temperature. Explain your answers.

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