8.1 Contact Forces Lesson Set 1

What variable could you change to affect the forces in a collision?

• 1. The color of the object

• 1. The speed of the moving object

• 1. The shape of the object

• 1. The surface texture

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

NGSS.MS-PS3-1

What causes sensors in the skin to send signals to neurons?

• 1. Sound waves

• 1. Increased oxygen levels

• 1. Exposure to sunlight

• 1. Deformation due to contact forces

In a scientific investigation, what is a dependent variable?

• 1. An unrelated variable

• 1. A constant variable

• 1. The variable being measured

• 1. The variable being changed

Tags

NGSS.MS-PS2-2

NGSS.MS-LS2-1

Which of the following best describes kinetic energy?

• 1. Energy that an object possesses due to its motion

• 1. Energy produced by friction

• 1. Energy released in a chemical reaction

• 1. Energy stored in an object at rest

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

What supported our claim that solid objects bend or change shape when pushed in a collision?

• 1. Hypothetical scenarios only

• 1. Guesswork without any evidence

• 1. Observations from videos and experiments

• 1. Opinions of the students

What did the demonstration with a piece of concrete help us investigate?

• 1. Whether concrete would bend before breaking when force is applied

• 1. Whether concrete can float in the air

• 1. Whether concrete can reflect light

• 1. Whether concrete would change color when twisted

Tags

NGSS.MS-PS2-2

NGSS.MS-PS1-2

What helped support the claim that solid objects bend under force?

• 1. The experiment showing objects flying

• 1. The sound made during the collision

• 1. The bending of a bat, golf club, and concrete beam

• 1. The change of color in materials

How does the brain help us respond to sensations we feel?

• 1. By increasing heart rate

• 1. By releasing glucose into the bloodstream

• 1. By producing sweat

• 1. By interpreting signals and sending responses through motor neurons

When drawing a free body diagram of 2 colliding cars, what characteristic of the arrows helps indicate the strength of the forces?

• 1. Thickness of the arrows

• 1. Direction of the arrows

• 1. Length of the arrows

• 1. Color of the arrows

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

During an investigation, if the mass of one object and speed of another are increased, what would likely happen to the resulting peak forces?

• 1. Peak forces would increase

• 1. It depends on the shape

• 1. Peak forces would stay the same

• 1. Peak forces would decrease

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1