Bones and Muscles - Science Lecture Flashcards

Practice Q&A flashcards covering bones, muscles, joints, arm movement mechanics, and the Scientific Inquiry Cycle.

What function do bones serve in the human body?

Bones give our bodies shape and support.

What are muscles and how do they assist in body movement?

Muscles are soft parts inside our bodies attached to bones that pull on the bones to help us move.

What is a joint?

A joint is the bending part of the body where two bones connect.

Do muscles push or pull bones to create movement?

Muscles pull bones; they cannot push them.

How do muscles work together to move body parts?

Muscles work in pairs. When one muscle contracts, the opposite muscle relaxes, allowing movement to occur.

What happens to the inner and outer arm muscles when you bend your arm?

When bending the arm, the inner muscle contracts (gets shorter) and becomes harder, while the outer muscle relaxes.

What happens to the inner and outer arm muscles when you stretch your arm straight?

When stretching the arm, the outer muscle contracts, while the inner muscle relaxes.

What is the hard muscle felt on the front of your upper arm when bent strongly?

The biceps (or inner muscle).

Which image shows a muscle contracting, (A) or (B)?

(B) shows a contracted muscle, as it gets shorter and thicker.

If Maged says both muscles contract at the same time and Farida says one contracts while the other relaxes, who is correct?

Farida is correct because muscles work in pairs where one contracts while the other relaxes.

What is the Scientific Inquiry Cycle?

It is the professional method scientists follow to investigate, observe, and find evidence to solve scientific mysteries.

What are the 6 steps of the Scientific Inquiry Cycle in order?

1. Question, 2. Prediction, 3. Plan, 4. Experiment & Observation, 5. Data (Results), 6. Conclusion.

What happens during the 'Plan' step of the Scientific Inquiry Cycle?

Scientists decide which conditions to compare and keep the same, and plan the experiment method.

Why is it important to organize results into tables or graphs during the 'Data' step?

To make the results easier to analyze and identify patterns or relationships.

If your prediction turns out to be incorrect after an experiment, does it mean the experiment was a failure?

No, an incorrect prediction is still useful because it helps us learn and improve our understanding.

What is required to make an experiment a fair test?

Change only the condition you want to test and keep all other conditions exactly the same.