ACT Aspire Science (Grade 6)

Students used a graduated cylinder (see Figure 1) to study the densities of liquids, including honey, corn syrup, vegetable oil, and water, as well as of several solid objects. Fluids or solid objects float in liquids that are denser. Fluids or solid objects sink in liquids that are less dense.

Experiment 1: Students prepared a density column by slowly pouring 100 ml each of honey, corn syrup, vegetable oil, and water one at a time into the graduated cylinder. The liquids formed four separate layers (A, B, C, and D) in the graduated cylinder. The densities of these liquids are shown in Table 1.

Experiment 2: Students dropped small solid objects of various materials, including aluminum, balsa wood, coal, and rubber, into the density column one at a time. The densities of these substances are shown in Table 2.

Which of the following statements is true?

• Corn syrup is less dense than vegetable oil

• Honey is less dense than vegetable oil.

• Water is less dense than corn syrup.

• Honey is less dense than water.

Tags

NGSS.MS-PS1-2

Students used a graduated cylinder (see Figure 1) to study the densities of liquids, including honey, corn syrup, vegetable oil, and water, as well as of several solid objects. Fluids or solid objects float in liquids that are denser. Fluids or solid objects sink in liquids that are less dense.

Experiment 1: Students prepared a density column by slowly pouring 100 ml each of honey, corn syrup, vegetable oil, and water one at a time into the graduated cylinder. The liquids formed four separate layers (A, B, C, and D) in the graduated cylinder. The densities of these liquids are shown in Table 1.

Experiment 2: Students dropped small solid objects of various materials, including aluminum, balsa wood, coal, and rubber, into the density column one at a time. The densities of these substances are shown in Table 2.

Which of the following correctly lists the layers of the density column from top to bottom?

• Corn syrup, vegetable oil, water, honey

• Vegetable oil, water, corn syrup, honey

• Honey, corn syrup, water, vegetable oil

• Water, vegetable oil, honey, corn syrup

Tags

NGSS.MS-PS1-2

Students used a graduated cylinder (see Figure 1) to study the densities of liquids, including honey, corn syrup, vegetable oil, and water, as well as of several solid objects. Fluids or solid objects float in liquids that are denser. Fluids or solid objects sink in liquids that are less dense.

Experiment 1: Students prepared a density column by slowly pouring 100 ml each of honey, corn syrup, vegetable oil, and water one at a time into the graduated cylinder. The liquids formed four separate layers (A, B, C, and D) in the graduated cylinder. The densities of these liquids are shown in Table 1.

Experiment 2: Students dropped small solid objects of various materials, including aluminum, balsa wood, coal, and rubber, into the density column one at a time. The densities of these substances are shown in Table 2.

Which of these objects would be most likely to sink to the bottom of the density column?

• Aluminum paperclip

• Rubber band

• A small piece of coal

• Balsa wood

Tags

NGSS.MS-PS1-2

Students used a graduated cylinder (see Figure 1) to study the densities of liquids, including honey, corn syrup, vegetable oil, and water, as well as of several solid objects. Fluids or solid objects float in liquids that are denser. Fluids or solid objects sink in liquids that are less dense.

Experiment 1: Students prepared a density column by slowly pouring 100 ml each of honey, corn syrup, vegetable oil, and water one at a time into the graduated cylinder. The liquids formed four separate layers (A, B, C, and D) in the graduated cylinder. The densities of these liquids are shown in Table 1.

Experiment 2: Students dropped small solid objects of various materials, including aluminum, balsa wood, coal, and rubber, into the density column one at a time. The densities of these substances are shown in Table 2.

During Experiment 2, what is the most likely location of the piece of coal?

• Floating on top of layer A

• Floating on top of layer B

• Floating on top of layer C

• Floating on top of layer D

Tags

NGSS.MS-PS1-2

Students used a graduated cylinder (see Figure 1) to study the densities of liquids, including honey, corn syrup, vegetable oil, and water, as well as of several solid objects. Fluids or solid objects float in liquids that are denser. Fluids or solid objects sink in liquids that are less dense.

Experiment 1: Students prepared a density column by slowly pouring 100 ml each of honey, corn syrup, vegetable oil, and water one at a time into the graduated cylinder. The liquids formed four separate layers (A, B, C, and D) in the graduated cylinder. The densities of these liquids are shown in Table 1.

Experiment 2: Students dropped small solid objects of various materials, including aluminum, balsa wood, coal, and rubber, into the density column one at a time. The densities of these substances are shown in Table 2.

In another experiment, the students drop a small object of an unknown substance into the density column. If this object floats on top of layer D, what may the students conclude?

• The object has a density less than 0.92 g/cm³.

• The object has a density less than 1.00 g/ cm³.

• The object has a density less than 1.33 g/ cm³.

• The object has a density less than 1.42 g/ cm³.

Tags

NGSS.MS-PS1-2

Clouds form when tiny droplets of water condense in the sky. When an air mass rises and expands, it cools. As the air cools, it becomes saturated with water vapor. When the temperature drops below the dew point, microscopic water droplets condense on tiny particles such as dust or soot. Cirrus clouds have tiny ice crystals. Meteorologists use ten basic classifications for clouds. See Figure 1. Clouds are named using the Latin roots in Table 1.

According to Table 1, which of the following clouds is associated with rain?

• Cumulus

• Altostratus

• Cirrocumulus

• Nimbostratus

Tags

NGSS.MS-ESS2-5

Clouds form when tiny droplets of water condense in the sky. When an air mass rises and expands, it cools. As the air cools, it becomes saturated with water vapor. When the temperature drops below the dew point, microscopic water droplets condense on tiny particles such as dust or soot. Cirrus clouds have tiny ice crystals. Meteorologists use ten basic classifications for clouds. See Figure 1. Clouds are named using the Latin roots in Table 1.

According to Table 1, which of the following cloud names indicates a cloud that is located higher in the sky than similar clouds?

• Cumulus

• Nimbostratus

• Altostratus

• Stratocumulus

Clouds form when tiny droplets of water condense in the sky. When an air mass rises and expands, it cools. As the air cools, it becomes saturated with water vapor. When the temperature drops below the dew point, microscopic water droplets condense on tiny particles such as dust or soot. Cirrus clouds have tiny ice crystals. Meteorologists use ten basic classifications for clouds. See Figure 1. Clouds are named using the Latin roots in Table 1.

Which of the following clouds are made of ice crystals?

• Cumulonimbus

• Cirrus

• Stratocumulus

• Cumulus

Clouds form when tiny droplets of water condense in the sky. When an air mass rises and expands, it cools. As the air cools, it becomes saturated with water vapor. When the temperature drops below the dew point, microscopic water droplets condense on tiny particles such as dust or soot. Cirrus clouds have tiny ice crystals. Meteorologists use ten basic classifications for clouds. See Figure 1. Clouds are named using the Latin roots in Table 1.

According to Figure 1, which of the following clouds would most likely be located the highest in the sky?

• Cirrostratus

• Altostratus

• Stratocumulus

• Altocumulus

Tags

NGSS.MS-ESS2-5

Which of the following is a primary consumer in the Alaskan tundra food chain?

• Lichen

• Brown bear

• Bacteria

• Muskoxen

Tags

NGSS.MS-LS2-2