HMH Unit 4 Test

There are four containers of water. Each container is a different temperature.

Container 1 is below 0 ºC.

Container 2 is 50ºC.

Container 3 is 70 ºC.

Container 4 is 100 ºC.

For which container can you use reasoning to support a claim that the water is boiling?

• 1

• 2

• 3

• 4

Answer explanation

Container 4 is at 100 ºC, which is the boiling point of water at standard atmospheric pressure. Therefore, reasoning supports that the water in Container 4 is boiling.

The picture shows a pot of water on a stove. Read the thermometer in the pot. 

What could you do to make the water boil?

• put the pot in the freezer

• take the pot off the stove

• turn down the heat on the stove

• turn up the heat on the stove

Answer explanation

To make the water boil, you need to increase the temperature. Turning up the heat on the stove will raise the water's temperature, allowing it to reach its boiling point.

Mary uses a pan balance to compare the masses of a rock and a soccer ball. The picture shows Mary’s experiment.

What claim can be made using evidence from the picture?

• The rock and the ball have the same mass.

• The rock has a greater volume than the soccer ball.

• The rock is smaller than the ball but has more mass.

• The ball has more matter than the rock, so the ball has more mass.

Answer explanation

The picture shows the soccer ball on one side of the pan balance and the rock on the other. Since the ball is heavier, it indicates that the ball has more matter than the rock, leading to the conclusion that the ball has more mass.

Look at the pictures.

Which of the following sentences about the objects is correct

• they are all the same color

• they are all liquids

• they are all matter

• they are all the same shape

Answer explanation

The correct choice is 'they are all matter' because all objects, regardless of their state (solid, liquid, or gas), are forms of matter. The other options do not universally apply to all objects shown.

Samantha wants to compare physical properties of things in the classroom. She makes a table to help her remember which tools and units to use.

Which tool does Samantha need to finish the table?

• Graduated Cylinder

• Liter

• Stopwatch

• Thermometer

Answer explanation

Samantha needs a Graduated Cylinder to measure liquid volumes accurately, which is essential for comparing physical properties. The other tools listed serve different purposes and do not fit her needs for this task.

Jill compares the mass of objects.

What claim can be made using evidence from the picture?

• The notebook and the cubes have no mass.

• The notebook has less mass than the cubes.

• The notebook has more mass than the cubes.

• The notebook and cubes have the same mass.

Answer explanation

The evidence from the picture shows that the notebook and the cubes are balanced, indicating they have the same mass. Therefore, the correct claim is that the notebook and cubes have the same mass.

Aurelia measures the temperature of sand in a cup. She leaves the cup in the hot sun for 1 hr and measures the temperature again. The figure shows the cup at the start of her experiment and after 1 hr.

Which measurement is closest to the rise in the temperature of the sand?

• 4 °C

• 6 °C

• 10 °C

• 12 °C

Answer explanation

Aurelia's temperature measurement after 1 hour shows a rise of approximately 6 °C, which is the closest option to the observed increase in temperature of the sand in the cup.

Cameron pours some cold water into a cup. He measures the temperature of the water every 5 min. The table below shows his measurements.

During which time interval did the temperature increase the least?

• 0-5 minutes

• 5-10 minutes

• 10-15 minutes

• 15-20 minutes

Answer explanation

To find the interval with the least temperature increase, compare the changes: 0-5 min, 5-10 min, 10-15 min, and 15-20 min. The smallest increase occurs during 5-10 minutes, making it the correct choice.

You place an object in water and measure its volume. You then read the lines on the graduated cylinder shown below to make your measurement.

How many milliliters are between the lines on the graduated cylinder?

• 1 mL

• 3 mL

• 5 mL

• 10 mL

Answer explanation

The graduated cylinder typically has markings that indicate volume increments. If the lines on the cylinder are spaced such that there are 10 mL between them, then the correct answer is 10 mL.

Vin recorded the temperature at noon for 10 days.

What was the difference in temperature between the warmest and the coolest day?

• 4 °C

• 6 °C

• 8 °C

• 9 °C

Answer explanation

To find the temperature difference, subtract the coolest day's temperature from the warmest day's temperature. The warmest day was 9 °C higher than the coolest day, making the difference 9 °C.