OwlSheets Students
← Exit

The Storm-Soaked Field Marker

0 / 14

The Storm-Soaked Field Marker

Trace what changed and how the marker moved.

Read the field notes

A storm soaked part of the community baseball field. Use the investigation notes to answer the questions.

Marker Tests After the Storm

After a strong storm, part of the baseball field was damp. The field crew tested a foam boundary marker before repainting the foul line. They pulled the marker with ropes in opposite directions and measured how far it traveled during each one-second interval. A force is a push or a pull. Forces in opposite directions can balance when they have equal strength.

The records show the marker's motion. In Test A, the marker started at rest on dry grass. The left pull was 5 units and the right pull was 5 units. It traveled 0 cm, 0 cm, and 0 cm during the first three seconds. In Test B, the marker was already moving right on dry grass. The left and right pulls were each 4 units. It traveled 6 cm during each of the three seconds.

In Test C, the marker started at rest on dry grass. The right pull was 7 units and the left pull was 3 units. It traveled 3 cm, 6 cm, and 9 cm during the first three seconds. In Test D, the marker was moving right. The left pull was 7 units and the right pull was 3 units. It traveled 9 cm, 6 cm, and 3 cm during the first three seconds.

The crew then compared surfaces. In Test F, the marker was moving right at the same starting speed on dry grass. The pulls were 4 units left and 4 units right. It traveled 5 cm in each second. In Test G, the starting speed and pulls were the same, but the marker moved on the storm-damp grass. The wet grass rubbed on it, and it traveled 3 cm, 2 cm, and 1 cm. The crew kept the marker and rope pulls the same so the surface would be the main change.

1.

How far did the marker travel during the second second of Test C? cm

2.
What do Tests A and B together show about balanced pulls?
Question 2 options
3.
Which cause-and-effect statement best connects the storm to Test G?
Question 3 options
4.
Circle the TWO records that show the marker's speed changed during the test.

5.
Why did the marker slow down in Test D?
Question 5 options
6.

In Test C, how many more centimeters did the marker travel during the third second than during the first second? cm

7.
What is the strongest evidence that the damp surface affected the marker's motion?
Question 7 options
8.
Which plan would make the next dry-grass and damp-grass comparison fairest?
Question 8 options

Explain and predict

Use the test evidence to explain what happened next and make a prediction.

9.
Circle the TWO statements that are supported by Tests F and G.

10.
Which sequence correctly describes the cause-and-effect chain in the field notes?
Question 10 options
11.
The marker is moving right. The left pull becomes stronger than the right pull and stays stronger. What is the best prediction?
Question 11 options
12.
Which setup would best help bring a right-moving marker to a stop?
Question 12 options
13.
A student says, “The damp grass changed the marker's motion.” Do you agree? Use at least two numbers from Tests F and G to explain your answer.
14.
Plan a fair follow-up test to check whether the damp grass causes the marker to slow. Tell what you would change, what you would keep the same, and what motion data you would record.