Density Practice Questions Flashcards

1
Q

Taylor has a cat named Mikey who weighs 10 grams. Mikey is 30 cm tall, 40 cm long, and 15 cm wide.

What is Mikey’s volume?

What is Mikey’s density?

A

Mikey’s volume is 18,000cm3

Mikey’s density is 0.0005g/cm3

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2
Q

Ruth wants to go on the biggest slide at the waterpark in West Edmonton Mall. The ride attendant claims you must have a density of 10.0695g/cm3. Ruth has a mass of 500g, and her dimensions are as follows: H=106cm W=26cm L=15cm.

Will Ruth be allowed down the waterslide or will she have to fight the attendant?

A

Ruth has a density of 0.012g/cm3 and since it is smaller than the requirement she must fight the attendant so she can go down the slide.

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3
Q

Alex has a cat that is super fat. She is so fat that she often falls in the bathtub. She weighs 90 grams(she is 9x heavier than Mikey!). Her dimensions are as follows:

H=60cm

W=20cm

L=18cm

What is the density of the fat cat?

A

Alex’s cat has a density of 0.004g/cm3

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4
Q

Hayden has a dog named Bob who fell into some muddy water. Bob is 50cm tall, 10.1cm long, and 5.2 cm wide. Bob weighs a whopping 900 grams.

Will Bob be able to float in the water? The density of the murky water is 1.56g/cm3.

A

Yes, Bob will be able to float in the muddy water, because his density is 0.34g/cm3.

Because his density is lower than that of the water he will float.

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5
Q

Lilly was going to eat a double chocolate cake. The mass of the cake is 20g, and its dimensions are as follows.

H=30cm

W=15cm

L=12cm

What is the density of Lilly’s cake?

A

The density of Lilly’s cake is 0.004g/cm3/0.0037cm3.

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6
Q

Jeff is going to the pool and he weighs 200 grams. Jeff does not want to flood the pool so it is important that he floats. His volume can be calculated using these measurements:

H=600cm

W=20cm

L=15cm

Will Jeff float if the density of pure water is 1.0g/cm3?

A

Yes, Jeff will float because his density is 0.001g/cm3 which is less than water @ 1.0g/cm3.

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7
Q

Lisa is adding an orange slice to her glass of water. The orange has a mass of 3g and the dimensions are:

H=3cm

W=2cm

L=4cm

What is the density of her orange slice?

A

The density of the orange slice is 0.125g/cm3.

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8
Q

Miss Cupcake was putting icing on a muffin. The icing used has a mass of 77 grams. The icing needed to cover the muffin will take up the following dimensions:

H=7cm

W=11cm

L=12cm

What is the density of the icing used to cover the muffin?

A

The density of the cupcakes icing is 0.083g/cm3.

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9
Q

Liam is throwing a big rock into the river. The rock has a mass is 900 grams. It measures:

H=50cm

W=70cm

L=8cm

What is the density of Liam’s rock?

A

The density of Liam’s rock is 0.03g/cm3.

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10
Q

Bob also has a cat. His cat is 90 grams! The cat is only 5.9 cm tall, 4cm long, and 9.1cm wide.

What is the density of his cat?

A

The density of Bob’s cat is 0.419g/cm3.

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11
Q

Jeff was eating an Oreo and he accidentally dropped it into his glass of milk. Before entering the milk, the Oreo had a mass of 4 grams. Its dimensions are:

H=2cm

W=3cm

L=4cm

What is the density of his Oreo before it fell into the milk?

A

The Oreo has a density of 0.1666cm3.

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12
Q

Iceman is putting an apple into a pie. The apple he used weighed 7 kilograms. The dimensions of the area filled was:

H=1m

W=2m

L=4m

What is the density of the apple?

A

The density of the giant apple is 875g/cm3.

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13
Q

Jack is putting candy into his candy bucket. The bucket stands 10 cm tall, 5 cm wide, and 4 cm long. His bucket is only 7 grams. He adds 50 grams of candy into his bucket.

What is the density of Jack’s bucket after he adds the candy?

A

The density of the bucket is 0.285g/cm3.

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14
Q
  1. Holly’s cat Candy decides to roll around in a pool of Jello. Candy weighs 45 grams and has a volume of 300cm3. The Jello has a mass of 175 grams and a volume of 750cm3.

What has a higher density: Candy or the pool of Jello?

A

Candy: 0.15g/cm3 Jello: 0.2333g/cm3

The pool of jello has a higher density than Candy.

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15
Q

A tree fell over and landed in a river. The tree has a mass of 9,000,000 grams. It measures in at:

H=600cm

W=200cm

L=300cm

What is the density of the tree?

A

The density of the tree is 0.25g/cm3.

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16
Q
  1. Mr. Veggie was putting a lightbulb into a flashlight. The bulb weighs 5 grams and has a volume of 50cm3.

What is the bulbs density?

A

The density of the lightbulb is 0.1g/cm3.

17
Q

Bob jumped into a pit of lava…don’t ask why. Bob weighs 90,000 grams and is 90 cm tall. He is quite fat with a width of 500cm and a length of 500 cm.

What is Bob’s density assuming he does not melt instantly?

A

Bob’s density is 0.004g/cm3.

18
Q

Mr. Bacon added 90 grams of salt to his bacon for breakfast. The volume of salt was 200cm3.

What is the density of the salt?

A

The density of the salt is 0.45g/cm3.

19
Q

Pinky had an Oreo he dropped into milk. The Oreo had a mass of 2 grams and a volume of 30cm3. The milk had a density of 1.35g/cm3.

Did the Oreo sink or float? How do you know?

A

The Oreo will float because it has a density of 0.066g/cm3 which is lower than the density of milk (1.35g/cm3).

20
Q

An object has a density of 1.24g/ml. It has a volume of 150ml. What is the mass of the object?

A

m=d x v

m=1.24g/ml x 150ml

m=186g

21
Q

An object has a density of 0.87g/ml. It has a volume of 750ml. What is the mass of the object?

A

m=d x v

m=0.87g/ml x 750ml

m=653g

22
Q

An object has a density of 2.75g/ml. It has a volume of 50ml. What is the mass of the object?

A

m=2.75g/ml x 50ml

m=137.5g

23
Q

An wooden boat has a mass of 750g and a density of 0.8g/ml. The boat floats quite nicely, what is the volume?

A

V=m/d

V=937.5ml

24
Q

An llifejacket has a mass of 200g and a density of 0.2g/ml. What is the volume of the life jacket?

A

v=m/d

v=200g/0.2g/ml

v=1000ml

25
Q

An animal has a mass of 5kg and a density of 0.9g/ml. What is the volume of the animal?

A

9kg=9000g

v=m/d

v=9000g/0.9g/ml

v=10, 000ml or 10L