HMH Unit 4 Test

Front

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. Which measurement is closest to the rise in the temperature of the sand? Options: 4 °C, 6 °C, 10 °C, 12 °C

Back

6 °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.

Front

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?

Back

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.

Front

For which container can you use reasoning to support a claim that the water is boiling? Container 1 is below 0 ºC. Container 2 is 50ºC. Container 3 is 70 ºC. Container 4 is 100 ºC.

Back

Container 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.

Front

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

Back

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.

Front

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? Options: Graduated Cylinder, Liter, Stopwatch, Thermometer

Back

Graduated Cylinder

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.

Front

Mary uses a pan balance to compare the masses of a rock and a soccer ball. What claim can be made using evidence from the picture?

Back

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.

Front

Which of these statements describes one way that solids are different from liquids?

Back

Solids have a definite shape, but liquids do not.

Answer explanation

The correct statement is that solids have a definite shape, while liquids take the shape of their container. This fundamental difference highlights how solids maintain their form, unlike liquids.

Front

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

Back

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.

Front

Cameron pours some cold water into a cup and measures the temperature every 5 min. During which time interval did the temperature increase the least? Options: 0-5 minutes, 5-10 minutes, 10-15 minutes, 15-20 minutes

Back

5-10 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.

Front

Which of the following sentences about the objects is correct?

Back

they are all matter

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.