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8th Grade Questions and Answers (Q&A)

What are animals that can breathe underwater and on drylands such as frogs and toads called?
Kevibuck
Answered: Jan 21, 2025
Amphibians, Amphibian, amphibian, amphibians

1 Answer

1391 views
Is Sun the largest star in the Universe?
W. Pratt, Marketing Analyst
Answered: May 23, 2019
The most massive star in the universe is, in fact, not the sun, it is called UY Scuti, which is a hypergiant located in the constellation Scutum. UY Scuti has a radius that is larger than the sun...Read More

7 Answers

1177 views
What are the 5 components of physical education?
Jaime Swain
Answered: Oct 26, 2020
Cardiovascular Endurance. Muscular Strength. Muscular endurance. Flexibility. Body...Read More

5 Answers

1051 views
What is the difference between Homozygous dominant and recessive genes?
S.Sophie
Answered: Feb 19, 2020
First, it is important to know what homozygous means. Homozygous means that in an organism, both copies of a given gene have the same allele. A homozygous dominant is when an organism carries two...Read More

3 Answers

898 views
Who uses Stethoscope?
Vvsubbarao
Answered: Jun 27, 2020

Stethoscopes are used by doctors to check heart beat of a person.

4 Answers

838 views
What is the probability of an offspring of a black guinea pig (BB) is crossed with a homozygous white guinea pig (bb) having black fur?
M. Krasinski, Content Writer
Answered: Jul 20, 2018
It will be easy to disregard number one as obviously, a guinea pig with black fur and a guinea pig with white fur will not make some a cartoonish guinea pig. The black fur is obviously a dominant...Read More

2 Answers

758 views
What change would most likely require additional force to produce the same results? A force of 5 N is required to increase the speed of a box from a rate of 1.0 m/s to m/s within 5 m along...
John Smith
Answered: Jan 21, 2025
Increase the mass of the box

1 Answer

755 views
What is the mass of the object If an object with  a density of 2g/mL, and is placed in a water tank and displaces 10mL of water?
John Smith
Answered: Jan 21, 2025
20g

Density is measured in mass per volume (g/mL). In this case, it is 2g/mL. If the volume is 10mL, than the mass will be 20g. (20g/10mL = 2g/mL) Density=mass/volume

2 Answers

739 views
Which object is more dense If two objects with the same mass are placed into water tanks and Object A displaces 10mL of water-object B displaces 15mL of water?
John Smith
Answered: Jan 21, 2025
Object A

Since both objects have the same mass, object A is more dense. The water displaces shows the volume of an object. If object A displaces less water, its mass (same mass as B)...Read More

1 Answer

678 views
What would most greatly affect the health of fish in a local pond?
John Smith
Answered: Jan 21, 2025
The daily release of hot water into the pond from a local factory.

1 Answer

625 views
What is a stethoscope used for?
K. Shadrach
Answered: Dec 20, 2019
A stethoscope is a medical instrument used for listening to sounds (auscultation) produced within the body. It is primarily used to listen to the sounds made in the heart, lungs,...Read More

5 Answers

597 views
How many people played tennis this year?
Mr_eddy
Answered: Jan 21, 2025
301,928

1 Answer

589 views
Which event will lead to the greatest reduction of dissolved oxygen in a lake?
John Adney
Answered: Aug 20, 2017

Increased nutrients and algal blooms because plants absorb carbondioxide and release oxygen

2 Answers

571 views
How old is the given sample?
John Smith
Answered: Jan 21, 2025
2 million years old

1 Answer

551 views
What did Charles do on the third day of school to get in trouble?
John Smith
Answered: Jan 21, 2025
He bounced a see-saw off a little girl s head.

1 Answer

519 views

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