Science SMC Review

Erosion is one of the processes involved in the formation of sedimentary rock. Which of these best describes the process of erosion?

• Rocks are broken into smaller pieces that remain in the same location.
• Pressure compacts layers of sediment and turns them into rock.
• Pieces of rock or soil are carried from one place to another.
• Sediment grains fall to the bottom of a lake to form sedimentary layers.

A student made a list of activities that involve energy.  
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1. Sharks chasing a school of fish
2. A toaster heating bread
3. A cell phone charging
4. A tree limb falling to the ground
5. Tomato plants absorbing sunlight
6. A canoe floating down a river
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Which activities on the list are examples of the use of mechanical energy? 

• Activities 1, 4, and 6 
• Activities 2, 4, and 5
• Activities 1 and 2 
• Activities 3, 5, and 6 

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Which of these is not soluble in water?

• Oil
• Salt
• Honey
• Sugar

A student helped his father prepare soup for dinner. His father asked him to use a wooden spoon to stir the soup as it heated.

Why would the student's father ask him to use a wooden spoon?

• The wooden spoon is able to float in the soup

• the wooden spoon is able to sink in the soup

• the wooden spoon is a good conductor of thermal energy

• The wooden spoon is a good insulator of thermal energy

The arrows in the diagrams below represent light. Which diagram best shows how a glass mirror would reflect light?

• 
• 
• 
• 

Tags

NGSS.MS-PS4-2

Which of the following statements best describes the effect of solar energy absorbed by water in the ocean?

• The color of the ocean water becomes light blue

• the temperature of the water decreases

• The water changes state from liquid to gas

• The ocean water becomes less salty.

Tags

NGSS.MS-ESS2-4

NGSS.MS-PS1-4

A student is looking for evidence that Earth is always rotating on its axis. Which of the following would provide the best evidence? 5.8 C

• The different amount of rain that falls each day
• The appearance of shadows changing throughout the day
• The presence of other planets in the night sky
• The different phases of the moon in a month

5.6 A When a bat searches for prey at night, it makes sounds as it flies, and it uses the sounds’ echoes to find its prey. When the bat flies and listens to echoes to locate prey, it is using —

• thermal energy and light energy
• sound energy and thermal energy
• mechanical energy and sound energy
• light energy and mechanical energy

Tags

NGSS.MS-PS4-2

5.7 B A wide U-shaped valley is shown in the photograph below. This valley was most likely formed by —

• flash flooding
• a glacier
• a hurricane
• melting snow

Tags

NGSS.MS-ESS2-2

Some students make a model to show one of the first steps in the formation of sedimentary rock. The students pour 2 centimeters of light-colored sand into a clear plastic box. Then they add 1 centimeter of gravel. Finally they pour 2 centimeters of dark-colored sand on top of the gravel. Which characteristic of sedimentary rock does this model best show? 5.7A

• Sedimentary rock is made of layers.
• Sedimentary rock is cemented bits of rock.
• Sedimentary rock is often limestone.
• Sedimentary rock is common in Texas.