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mph Flashcards

1
Q

What is the scientific method?

A

A systematic process for investigating phenomena, acquiring new knowledge, or correcting and integrating previous knowledge.

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2
Q

True or False: The theory of evolution is widely accepted in the scientific community.

A

True

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3
Q

Fill in the blank: The basic unit of life is called a ______.

A

cell

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4
Q

What is the formula for photosynthesis?

A

6CO2 + 6H2O + light energy → C6H12O6 + 6O2

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5
Q

Which organelle is known as the powerhouse of the cell?

A

Mitochondria

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6
Q

What is the pH range of acidic solutions?

A

0 to 7

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7
Q

True or False: Water is a compound.

A

True

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8
Q

What are the three states of matter?

A

Solid, liquid, gas

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9
Q

Multiple Choice: Which of the following is not a renewable resource? A) Solar B) Wind C) Coal D) Hydropower

A

C) Coal

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10
Q

What is the primary gas responsible for climate change?

A

Carbon dioxide (CO2)

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11
Q

Fill in the blank: The process by which plants convert sunlight into chemical energy is called ______.

A

photosynthesis

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12
Q

What is Newton’s second law of motion?

A

Force equals mass times acceleration (F=ma).

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13
Q

True or False: Electrons have a positive charge.

A

False

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14
Q

What is the study of living organisms called?

A

Biology

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15
Q

Multiple Choice: Which scientist proposed the law of universal gravitation? A) Albert Einstein B) Isaac Newton C) Galileo Galilei D) Charles Darwin

A

B) Isaac Newton

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16
Q

What is the most abundant gas in the Earth’s atmosphere?

A

Nitrogen

17
Q

Fill in the blank: The ______ is the basic unit of heredity.

A

gene

18
Q

What is the main purpose of the scientific community’s peer review process?

A

To ensure the quality and validity of scientific research.

19
Q

True or False: All scientific theories are considered facts.

A

False

20
Q

What is the term for a substance that cannot be broken down into simpler substances?

A

Element

21
Q

What is the key component of DNA?

A

Nucleotides

22
Q

Multiple Choice: What is the primary source of energy for Earth? A) The Moon B) The Sun C) Wind D) Geothermal

A

B) The Sun

23
Q

What is the law of conservation of mass?

A

Mass is neither created nor destroyed in a chemical reaction.

24
Q

Fill in the blank: The ______ is a measure of the average kinetic energy of particles in a substance.

A

temperature

25
Q

What is a hypothesis?

A

A testable prediction about the relationship between variables.

26
Q

Refraction

A
27
Q
  • is the bending of light as it travels from one
A
28
Q

medium to another of different optical densities.

A

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