A Sketchy Scene

In a sketchy scene, a scientist observes a chemical reaction where a gas is produced. Which of the following could be a sign that a gas is being produced?

• Bubbles forming in the solution

• The solution changing color

• The solution becoming colder

• The solution becoming warmer

Tags

NGSS.MS-PS1-2

A sketchy scene involves a pendulum swinging back and forth. What type of energy transformation occurs in this system?

• Kinetic to potential energy

• Potential to kinetic energy

• Thermal to kinetic energy

• Chemical to thermal energy

Tags

NGSS.MS-PS3-4

In a sketchy scene, a scientist uses a prism to split light into its component colors. What is this phenomenon called?

• Reflection

• Refraction

• Diffraction

• Dispersion

A sketchy scene shows a plant growing towards a light source. What is this growth movement called?

• Phototropism

• Geotropism

• Hydrotropism

• Thigmotropism

In a sketchy scene, a scientist measures the pH of a solution and finds it to be 3. What does this indicate about the solution?

• It is neutral

• It is acidic

• It is basic

• It is alkaline

A sketchy scene involves a magnet attracting iron filings. What type of force is responsible for this attraction?

• Gravitational force

• Electromagnetic force

• Nuclear force

• Frictional force

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

In a sketchy scene, a scientist observes water boiling at 100°C. What is happening to the water molecules during boiling?

• They are moving closer together

• They are moving further apart

• They are changing into a solid

• They are changing into a gas

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

A sketchy scene shows a scientist using a lever to lift a heavy object. What is the main advantage of using a lever in this situation?

• It increases the weight of the object

• It decreases the weight of the object

• It increases the force applied

• It decreases the force needed

Tags

NGSS.MS-PS2-2

In a sketchy scene, a scientist observes a rainbow after a rain shower. What causes the formation of a rainbow?

• Reflection of light

• Refraction and dispersion of light

• Diffraction of light

• Absorption of light

Tags

NGSS.MS-PS4-2

A sketchy scene involves a scientist measuring the speed of sound in air. Which of the following factors affects the speed of sound?

• Color of the air

• Temperature of the air

• Pressure of the air

• Humidity of the air