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Science: Middle School: Grades 6, 7 and 8 Quiz - Skeletons (Questions)

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Did you know that you had more bones when you were born than you have now? The skeletons of human babies have about 300 bones, but these soon fuse together as the baby grows and a human adult has only 206. This framework of bones supports our bodies - imagine if we had no skeleton, we'd be like bags of water! Our bones also allow us to move (think of the arm and leg bones) as well as protecting our organs. The skull is like a helmet which surrounds our brain, protecting it from knocks, and the breastbone and ribs form a protective cage around our heart and our lungs.

What is the function of the skeleton?

[ ]	To protect vital organs
[ ]	To allow movement
[ ]	To support the body
[ ]	All of the above

What is an invertebrate?

[ ]	An animal whose skeleton is made of cartilage
[ ]	An animal without a spine
[ ]	An animal with a backbone
[ ]	An animal without a skeleton

Which organ does the cranium protect?

[ ]	The liver
[ ]	The heart
[ ]	The brain
[ ]	The lungs

What is another name for the clavicle?

[ ]	Collarbone
[ ]	Skull
[ ]	Shoulder blade
[ ]	Shin

What is an exoskeleton?

[ ]	A weak skeleton
[ ]	An external skeleton
[ ]	A skeleton without joints
[ ]	An internal skeleton

Which of the following statements is not true?

[ ]	Bones are living tissue
[ ]	Exercise helps bones to become stronger
[ ]	Good nutrition helps bones to become strong
[ ]	Bones do not grow

Which part of the human skeleton protects the heart?

[ ]	The cranium
[ ]	The scapula
[ ]	The sternum
[ ]	The clavicle

Skeletons aid movement in animals, but they can't move on their own. What else is needed?

[ ]	Joints and muscles
[ ]	Muscles and tendons
[ ]	Tendons and cartilage
[ ]	Cartilage and joints

What does the spinal column contain?

[ ]	Bones called invertebrates
[ ]	One long, flexible bone
[ ]	Two bones - a neck bone and a back bone
[ ]	Many smaller bones called vertebrae

10.

Which device allows us to see bones inside a living animal?

[ ]	A digital scanner
[ ]	An X-ray or MRI machine
[ ]	A photocopier
[ ]	A microscope

Science: Middle School: Grades 6, 7 and 8 Quiz - Skeletons (Answers)

What is the function of the skeleton?

[ ]	To protect vital organs
[ ]	To allow movement
[ ]	To support the body
[x]	All of the above

The skeleton protects vital organs, supports the body and allows it to move

What is an invertebrate?

[ ]	An animal whose skeleton is made of cartilage
[x]	An animal without a spine
[ ]	An animal with a backbone
[ ]	An animal without a skeleton

An invertebrate is an animal without a spine while a vertebrate has a spine

Which organ does the cranium protect?

[ ]	The liver
[ ]	The heart
[x]	The brain
[ ]	The lungs

The cranium is another name for the skull

What is another name for the clavicle?

[x]	Collarbone
[ ]	Skull
[ ]	Shoulder blade
[ ]	Shin

The shoulder blade is also known as the scapula

What is an exoskeleton?

[ ]	A weak skeleton
[x]	An external skeleton
[ ]	A skeleton without joints
[ ]	An internal skeleton

Humans and other mammals have an endoskeleton - an internal skeleton. An exoskeleton is the opposite - an external skeleton. Animals such as spiders, insects, crabs and lobsters have exoskeletons

Which of the following statements is not true?

[ ]	Bones are living tissue
[ ]	Exercise helps bones to become stronger
[ ]	Good nutrition helps bones to become strong
[x]	Bones do not grow

Your skeleton grows just as the rest of your body does - can you imagine what would happen if a baby's bones never grew?

Which part of the human skeleton protects the heart?

[ ]	The cranium
[ ]	The scapula
[x]	The sternum
[ ]	The clavicle

Another name for the sternum is the breastbone

Skeletons aid movement in animals, but they can't move on their own. What else is needed?

[x]	Joints and muscles
[ ]	Muscles and tendons
[ ]	Tendons and cartilage
[ ]	Cartilage and joints

Joints allow the skeleton to bend while muscles provide the power to move

What does the spinal column contain?

[ ]	Bones called invertebrates
[ ]	One long, flexible bone
[ ]	Two bones - a neck bone and a back bone
[x]	Many smaller bones called vertebrae

Vertebrae is a plural. One of them is called a vertebra

10.

Which device allows us to see bones inside a living animal?

[ ]	A digital scanner
[x]	An X-ray or MRI machine
[ ]	A photocopier
[ ]	A microscope

If a doctor thinks you may have a broken bone you might have to have an X-ray