MCAS Review - Physical Science Question Preview (ID: 19193)
Review Questions For The Massachusetts Comprehensive Assessment Test.
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A student rolls a ball down the ramp. The ramp is supported by four stacked books. The student removes two books from the stack. Which of the following statements best describes how the ball’s motion is different after the books are removed?
a) The ball accelerates more quickly down the ramp.
b) The ball has a higher speed at the top of the ramp.
c) The ball takes more time to reach the bottom of the ramp.
d) The ball has a higher average speed when it rolls off the ramp.
When a person’s sweat evaporates, the person feels cooler. Which of the following statements best describes why sweating helps the person feel cool?
a) Heat is absorbed by sweat when it evaporates.
b) Heat is absorbed by the body when sweat evaporates.
c) The temperature of the water in sweat goes down when it evaporates.
d) The temperature of the water in the body goes up when sweat evaporates.
Which of the following could occur as a result of decreasing the heat energy of a gas?
a) condensation
b) evaporation
c) radiation
d) vaporization
Oxygen and iron combine chemically to form rust. Rust is classified as which of the following?
a) an atom
b) a compound
c) an element
d) a mixture
Which of the following is produced when two or more elements combine in a chemical reaction?
a) atom
b) compound
c) mixture
d) solution
A student is investigating potential and kinetic energy by stretching a spring across a table. When the student lets go, the spring recoils. At which time is potential energy in the spring being converted into kinetic energy in this system?
a) when the spring is stretching
b) when the spring is fully stretched
c) when the spring is recoiling
d) when the spring is fully recoiled
A student is given a sample of an unknown liquid to test in the laboratory. The student thinks that the liquid is water. Which of the following physical properties of the sample is most helpful to determine if the liquid is water?
a) color of the liquid
b) mass of the liquid
c) volume of the liquid
d) boiling point of the liquid
Water is changing from the liquid phase to the gas phase as it boils in a beaker. Which of the following statements explains why this cannot be used to prove that matter is conserved during a change of phase?
a) The change of phase is incomplete.
b) Water is changing both phase and temperature.
c) Water in the gas phase is lighter than liquid water.
d) The change of phase is taking place in an open system.
Which of the following is an example of a container that is filled with a pure substance rather than with a mixture?
a) a tire filled with air
b) a jar filled with salt water
c) a balloon filled with helium
d) a glass filled with chocolate milk
Sugar is composed of carbon, hydrogen, and oxygen. Sugar is an example of which of the following?
a) an atom
b) a compound
c) an element
d) a mixture
Tobias rode his bike on a road for a 2 hr period. On average, he passed a 1 km marker every 3 min during this period. Which of the following was his average speed for this 2 hr period?
a) 10 km/hr
b) 15 km/hr
c) 20 km/hr
d) 25 km/hr
New carpet is being measured for a room that is 5.5 m by 4.6 m. On a measuring tape, what is the smallest unit that is necessary to measure the room accurately for the carpet?
a) millimeters
b) centimeters
c) meters
d) kilometers
Ms. Bristol measured the mass of a closed beaker containing several ice cubes. The mass was 100 g. After the ice cubes had melted, Ms. Bristol measured the mass of the beaker again. What was the mass of the beaker of water the second time?
a) 50 g
b) 75 g
c) 100 g
d) 125 g
Which of the following is a characteristic of all chemical changes?
a) A different state of matter is produced.
b) Some mass is converted to energy.
c) Some form of light is given off.
d) A new material is formed.
An escalator at a shopping mall is 10 m long and moves at a constant speed of 0.5 m/s. If José steps onto the escalator at the bottom while it is moving, how long will it take him to travel the 10 m?
a) 5 s
b) 10 s
c) 15 s
d) 20 s
Which of the following is an example of the formation of a mixture?
a) rust forming on an iron nail
b) sugar crystals dissolving in water
c) sodium and chlorine forming table salt
d) hydrogen and oxygen reacting to produce water
Which of the following is an example of a physical change but not a chemical change?
a) A log gives off heat and light as it burns.
b) A tree stores energy from the Sun in its fruit.
c) A penny lost in the grass slowly changes color.
d) A water pipe freezes and cracks on a cold night.
A glass is partially filled with water. Five ice cubes are placed in the glass, causing the level of the water to reach the rim of the glass. Which of the following statements best explains the increase in water level?
a) The volume of the submerged ice is equal to the volume of water displaced.
b) The mass of the water in the glass is less than the mass of the ice.
c) The weight of the ice is less than the weight of the water in the glass.
d) The density of the water in the glass is greater than the density of the ice.
A jet flies from Washington, D.C. to Dallas, TX. The trip takes approximately 2 hours and covers approximately 1900 km. Which of the following best describes the speed and direction of the jet's flight?
a) 475 km/h southwest
b) 950 km/h southwest
c) 1900 km/h southwest
d) 3800 km/h southwest
In order for a glider to fly, its weight must be opposed by
a) lift.
b) drag.
c) gravity.
d) friction.
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