Physical Science STAAR REVIEW

Which object would replace the question mark to complete the chart?

• Glass Marble
• Aluminum Can
• Rubber eraser
• Cotton sock

What is the most reasonable conclusion that can be made?

• Cork has the lowest density
• Water is less dense than oil
• Cork is less dense than water but more dense than oil
• Water is less dense than both the cork and the oil

According to the chart, what makes Material 4 different from the other materials? 

• Crystals are smaller
• Mass is greater
• Denser than water
• Is not magnetic

A student an ice cub that is just starting to melt. The temperature of the water is most likely -

• 100 ⁰C
• 0 ⁰C
• 212 ⁰C
• 32 ⁰C

A beaker containing a solution of 10 grams of salt and 50 mL of water is placed on hot plate. How much salt will remain in the beaker after all of the water has evaporated?

• 60 grams
• 10 grams
• 50 grams
• 0 grams

A student adds sand to a beaker containing water. Which statement is true?

• The sand will sink to the bottom
• The sand will dissolve
• The sand will float
• The sand will evaporate

A student has a mixture of pepper flakes and iron filings. She wants to separate them. Which method would be the fastest and easiest?

• Pick out the pepper flakes with a tweezer.
• Add water to dissolve the pepper.
• Use a magnet to pull out the iron filings
• Use a screen to separate each item

A student wants to measure the mass of an object. Which tool should he use?

• Beaker
• Balance scale
• graduated cylinder
• spring scale

What are the main forms of energy involved with the system shown?

• chemical, solar, thermal
• electric, mechanical, light
• sound, electric, thermal
• solar, thermal, light

All of these are true about sound EXCEPT

• sound travels fastest through solids
• sound is a type of energy
• sound is vibrations
• sound travels fastest through gas