Gummy Bear Lab Quiz

What is the first step in measuring the size of a gummy bear?

• Weighing the gummy bear

• Measuring the length, width, and height of the gummy bear

• Calculating the volume of the gummy bear

• Determining the density of the gummy bear

Answer explanation

The first step in measuring the size of a gummy bear is measuring the length, width, and height of the gummy bear.

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DOK Level 2: Skill/Concept

If a gummy bear has a length of 2 cm, a width of 1 cm, and a height of 1 cm, what is its volume?

• 1 cm³

• 2 cm³

• 3 cm³

• 4 cm³

Answer explanation

To calculate the volume of a rectangular prism, multiply the length, width, and height. In this case, 2 cm * 1 cm * 1 cm = 2 cm³.

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DOK Level 2: Skill/Concept

Given a gummy bear with a mass of 4 grams and a volume of 2 cm³, calculate its density.

• 1 g/cm³

• 2 g/cm³

• 3 g/cm³

• 4 g/cm³

Answer explanation

Density is calculated by dividing mass by volume. In this case, 4g / 2cm³ = 2 g/cm³. Therefore, the correct density is 2 g/cm³.

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DOK Level 2: Skill/Concept

A student measures the dimensions of a gummy bear and finds them to be 2 cm, 1.5 cm, and 1 cm. They then calculate the volume. What is the volume of the gummy bear?

• 2 cm³

• 3 cm³

• 4 cm³

• 5 cm³

Answer explanation

To calculate the volume of the gummy bear, multiply the dimensions: 2 cm * 1.5 cm * 1 cm = 3 cm³. Therefore, the volume of the gummy bear is 3 cm³.

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DOK Level 2: Skill/Concept

If the density of a gummy bear is 1.5 g/cm³ and its volume is 2 cm³, what is its mass?

• 1 g

• 2 g

• 3 g

• 4 g

Answer explanation

To find the mass, use the formula: mass = density x volume. Substituting the values, mass = 1.5 g/cm³ x 2 cm³ = 3 g. Therefore, the correct answer is 3 g.

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DOK Level 2: Skill/Concept

A student finds that the mass of a gummy bear increases after soaking it in water. How would this affect the density of the gummy bear if its volume also increases?

• Density will increase

• Density will decrease

• Density will remain the same

• Cannot be determined

Answer explanation

When the gummy bear soaks in water, its mass increases but so does its volume. Since density is mass divided by volume, if volume increases more than mass, density will decrease.

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DOK Level 3: Strategic Thinking

Explain why measuring the dimensions of a gummy bear accurately is important for calculating its density.

• To ensure the mass is correct

• To ensure the volume is correct

• To ensure the density is correct

• To ensure the shape is correct

Answer explanation

To ensure the volume is correct

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DOK Level 3: Strategic Thinking

A gummy bear has a mass of 5 grams and a volume of 2.5 cm³. If another gummy bear has the same volume but a different mass, how would you determine which one is denser?

• Compare their masses

• Compare their volumes

• Compare their densities

• Compare their shapes

Answer explanation

Compare their densities

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DOK Level 3: Strategic Thinking

A student measures the mass of a gummy bear before and after soaking it in water. The mass increases from 3 grams to 5 grams, and the volume increases from 2 cm³ to 4 cm³. Calculate the change in density.

• Density increases from 1.5 g/cm³ to 1.25 g/cm³

• Density decreases from 1.5 g/cm³ to 1.25 g/cm³

• Density remains the same

• Density cannot be determined

Answer explanation

The density is calculated by mass/volume. Initially, density = 3g/2cm³ = 1.5 g/cm³. After soaking, density = 5g/4cm³ = 1.25 g/cm³. Therefore, the density decreases from 1.5 g/cm³ to 1.25 g/cm³.

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DOK Level 3: Strategic Thinking

A gummy bear is placed in a graduated cylinder containing 50 mL of water. The water level rises to 55 mL. What is the volume of the gummy bear?

• 3 cm³

• 4 cm³

• 5 cm³

• 6 cm³

Answer explanation

The volume of the gummy bear can be calculated by subtracting the initial volume of water (50 mL) from the final volume with the gummy bear (55 mL), resulting in 5 cm³.

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DOK Level 2: Skill/Concept