Unit 1 - Lesson 2 - Forces in Interaction

Isaac Newton was born in what year?

• 1750
• 1643
• 1700
• 1620

Which of the following is an “old” idea that Newton was taught while he was in school?

• The planets revolve around the sun

• The Earth is the center of the solar system

• Quantum Mechanics describes the motion of the planets

• Gravity is a force that acts on objects in a solar system

Newton published several books that are collectively known as?

• Newton's Laws
• Principia

• Mathematical Principles of Natural Philosophy
• Mathematica

The four scientific laws that Newton developed related to?

• Motion and gravitation
• Astronomy and astrology
• Electricity and magnetism
• Chemical reactions

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How did Newton develop his scientific laws?

• Through trial and error, asking his pet cat, and dreaming about it
• By reading ancient scrolls, consulting the stars, and flipping coins
• He combined the ideas and observations of many other scientists

• Through guessing, luck, and wishful thinking

In science, force refers to?

• A push or pull on an object
• A push or pull on a person
• A scientific theory
• A hug or handshake

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When do forces always occur?

• Forces occur when the moon is full
• Forces occur when there is no interaction between objects
• Forces occur only on Mondays
• Forces occur when there is an interaction between two objects

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Forces are described using what?

• Speed and direction

• Motion and distance

• Strength and direction

• Strength and distance

Which unit is used to measure the strength of forces?

• Kilogram (kg)
• Meter (m)
• Joule (J)
• Newton (N)

Different strengths of forces can be modeled using what?

• Arrows of different lengths

• Scales that measure different forces

• A table of different numerical values

• A graph of different numerical values

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