Force, Motion, and Energy
A student recorded the time it took for all the water in a puddle on a sidewalk to evaporate after a rain. Which kind of energy causes water to evaporate?
A. Light Energy
B. Sound Energy
C. Thermal Energy
D. Mechanical Energy
What is thermal energy? or What is answer C?
In the early 1600s, the astronomer Galileo used a telescope to make observations of Mercury and Venus. What are the positions of these planets in relation to the sun?
F) Mercury is the planet closest to the sun, and Venus is the second planet from the sun.
G) Mercury is the second planet from the sun, and Venus is the third planet from the sun.
H) Venus is the planet closest to the sun, and Mercury is the second planet from the sun.
J ) Mercury is the third planet from the sun, and Venus is the planet closest to the sun.
What is answer F?
F) Mercury is the planet closest to the sun, and Venus is the second planet from the sun.
Which landform is likely developed from the process of Deposition, Compaction, then Cementation?
F) Glaciers
G) Mountains
H) Sand dunes
J) Sedimentary rocks
What is answer J?
What is sedimentary rocks?
Some characteristics of the tundra are described.
• Long winters with temperatures at − 34 °C
• Less than 25 centimeters of precipitation each year
• Thin layer of topsoil covers the frozen ground
• Some types of plants found there are mosses, grasses, small shrubs, and trees
Based on this description, which pair of animals is LEAST likely to live in the tundra?
D.
What is a crane and alligator?
For a class demonstration, a student turned off the lights in the classroom. The student then shined light from a flashlight through a hole in a piece of cardboard. The class saw the narrow beam of light continue until another student placed a mirror in the light’s path. The light did not continue past the mirror because —
A. light cannot travel very far
B. the mirror absorbed all the light
C the light was refracted back to the light source
D. light travels in a straight line and cannot go around objects
What is answer D?
D. light travels in a straight line and cannot go around objects
A student pours 14 grams of sugar into a jar filled with 500 milliliters of water. The student thoroughly stirs the sugar and water to make a solution.
Which change most likely occurs to the sugar when it is added to the water?
F. The sugar breaks down to form a new substance in the solution.
G. The sugar changes water into a new substance in the solution.
H. The sugar floats on the surface of the water in the solution.
J. The sugar completely dissolves in the solution.
What is answer J?
J. The sugar completely dissolves in the solution.
Which effect would most likely occur if a six-lane highway were built through an ecosystem?
F) Competition for resources would be reduced.
G ) Habitats available to animals would be reduced.
H ) Air pollution would decrease.
J ) Water pollution would decrease.
What is answer G?
Habitats available to animals would be reduced.
Which circuit shown will produce light when the switch is closed?
What is answer B ?
Which statement best explains why the sun appears to move across the sky during the day?
F) The Earth is closest to the sun in the winter
G) The Earth is revolving around the sun
H) The Earth is tilted at a 23.5 degrees
J ) The Earth is rotating on its axis
What is answer J?
The Earth is rotating on its axis.
Many of America’s large oil fields are found underground at the Permian Basin in West Texas. An area of the Permian Basin is shown.
How did these oil fields form?
F. Dead plants and animals were buried for millions of years.
G. Plants were eaten by consumers that left fossilized remains.
H. Heat caused underground rocks to undergo chemical changes.
J. Rocks at the surface of Earth melted and then solidified.
What is answer F?
Dead plants and animals were buried for millions of years.
Students build a balloon-rocket car using a balloon, a straw, a water bottle, and some tape. When the straw is released by a student, the air from the balloon comes out. A picture of the car is shown.
Which statement best describes the motion of the car when the straw is released?
A. The car will move away from the wall in the same direction as the air that is leaving the balloon.
B. The car will move toward the wall because of the force of the air from the straw.
C. The car will move fast because the straw gets light as the air is released.
D. The car will not move because the air escapes from the balloon.
What is answer B?
The car will move toward the wall because of the force of the air from the straw.