Science STAAR Practice

What describes the ability of a solid to dissolve in water?

• melt

• dissapear

• solubility

• evaporate

Tags

NGSS.MS-PS1-2

Buoyancy means the ability to:

• evaporate

• attract magnetic objects

• repel things that are not electrical

• float or sink

The rise and fall of water levels around the world are known as tides. Most areas have a high tide and a low tide twice daily. What causes the water levels to rise and fall twice daily? 

• The pull of Moon's gravity on Earth's water

• The pull of the Sun's gravity on Earth's water

• The uneven heating of the Earth

• Stong noth winds on the Earth's ocean. 

Tags

NGSS.MS-ESS1-1

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

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.
-
Sharks chasing a school of fish
A toaster heating bread
A cell phone charging
A tree limb falling to the ground
Tomato plants absorbing sunlight
A canoe floating down a river
-
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

A student combined powdered paint with water to make a small amount of a blue liquid paint mixture. The student left the paint mixture in an open container. Several days later the student found the container and observed that changes had occurred. What most likely happened to the mixture?

• The container was empty after the mixture evaporated into the air.  

• The paint evaporated, leaving only clear water in the container.

• The water evaporated, leaving only a dry blue solid in the container.  

• The liquid paint mixture was lighter in color after some water evaporated.  

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Tropical climates have warm temperatures and abundant sunlight all year. What must be available for plants in these climates to make their own food throughout the year?

• Bacteria 

• Birds  

• Shade

• Water

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-1

A student puts four objects in a bucket filled with water. The objects are listed below. 
-
 Plastic ball
Glass marble
Metal paper clip
Wood block 
-
Which two objects are most likely less dense than the water?

• Wood block and metal paper clip

• Plastic ball and glass marble

• Metal paper clip and glass marble

• Wood block and plastic ball

Which of these is not soluble in water?

• Oil

• Salt

• Honey

• Sugar

If students could rotate the globe quickly or slowly and the globe could rotate only at the rate that Earth actually rotates, about how long would each complete rotation take?

• 30 Days

• 60 Minutes

• 24 Hours

• 365 Days

Tags

NGSS.MS-ESS1-1