1st 9 Weeks Review Flashcards

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1
Q

What helps you complete a task?

A

A tool

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2
Q

A spring scale measures _____

A

Force

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3
Q

Mass is measured with _____

A

A balance or triple beam balance

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4
Q

Which 2 tools are used to determine the volume of an irregularly shaped pebble?

A

(Water displacement method) Graduated cylinder and water

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5
Q

What is bioengineering?

A

The application of engineering to living things

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6
Q

How do engineers use science?

A

Engineering uses scientific knowledge to develop new technology.

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7
Q

Information gathered from experimentation or observation

A

Data

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8
Q

Observing events, asking questions, and experimentation used to formulate laws and principles to discover more about our natural world.

A

Science

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9
Q

What is technology?

A

A product or process designed to serve our needs.

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10
Q

Using your senses to obtain knowledge

A

Observation

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11
Q

Adaptive Bioengineering

A

Engineering that results in a product or process that changes living organisms, such as heart surgery, laser eye surgery, etc.

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12
Q

Assistive bioengineering

A

Engineering that results in a product or process that helps living organisms, but does not change them, such as wheelchairs, eyeglasses, and crutches.

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13
Q

What is a conceptual model?

A

A system of ideas.

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14
Q

A pattern, plan, or representation of an object or system.

A

Model

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15
Q

Law

A

A summary of many experiments, observations, and research to explain how something works.

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16
Q

What did J.J. Thomson discover, which disproved the idea that atoms are indivisible?

A

The electron

17
Q

Who created the plum-pudding model?

A

J.J. Thomson

18
Q

Who was a British chemist who experimented with different substances and published an atomic theory?

A

Dalton

19
Q

Who found that electrons move in paths, or energy levels?

A

Bohr

20
Q

An atom’s atomic number is also… (2 things)

A
  1. The number of protons in an atom

2. The number of neutrons in an atom (assuming the atom has no overall charge)

21
Q

How do you find the mass number of an atom?

A

Add the number of protons and the number of neutrons in the nucleus of an atom.

22
Q

If there is an element J-37, what is 37?

A

The element’s atomic mass/mass number

23
Q

If two atoms are isotopes, then ____

A

They have the same number of protons (and therefore the same element) but a different number of neutrons (and thus a different mass number)

24
Q

What is the atomic mass of an element?

A

The average mass number of all naturally occurring isotopes of an element.

25
Q

Atom : mass number :: element : ____

A

Atomic mass

26
Q

Theory

A

An explanation for some phenomenon based on observation, experimentation, and reason, but cannot be proven.

27
Q

What are the steps of the scientific method?

A
  1. Ask a question
  2. Form a hypothesis
  3. Test the hypothesis
  4. Analyze the data
  5. Draw conclusions
  6. Communicate results.
28
Q

What are the steps of the engineering design process?

A
  1. Identify a problem and research a need
  2. Imagine - develop possible solutions
  3. Plan - Build a prototype
  4. Create - Test and evaluate the prototype
  5. Improve - Modifying the prototype and retesting it
29
Q

What is the independent variable of an experiment?

A

The factor that purposely varies throughout each experimental group in the experiment in order to test a hypothesis.

30
Q

What is the dependent variable of an experiment?

A

The result or effect of the independent variable; the outcome that depends on the variable.