The chart shows parts of the body at different levels of organization.
Which picture can BEST be used to fill in box S?
A) A
B) B
C) C
D) D

* Hover over answer image to enlarge
2)
20g of sugar is stirred into a beaker containing 100 g of water. After the sugar has completely dissolved, the solution is put on the scale. What is the mass of the solution ?
A) 20g
B) 80g
C) 100g
D) 120g
3)
Audrey pours hot chocolate into a cup. How is heat energy transferred?
A) Heat from the hot chocolate moves to the cup.
B) Cold from the cup moves to the hot chocolate.
C) Heat energy does not move because the heat is in a liquid.
D) Heat from the hot chocolate moves into the cup, and cold from the cup moves into the hot chocolate.
4)
Pig Weight Gain
Feed Ratio of Wheat & Corn Pig Weight Gain, 2 months (in pounds)
75% wheat & 25% corn 40 pounds
67% wheat & 33% corn 47 pounds
50% wheat & 50% corn 51 pounds
33% wheat & 67% corn 54 pounds
25% wheat & 75% corn 61 pounds

Taylor and Amad are raising a pig for the 4-H livestock show. They wanted to raise the biggest, fattest pig to sell at the fair. They tried different blends of pig feed on the piglets. They recorded the average amount of weight the pigs gained in the data table.
Based on Taylor and Amad's data, how can you explain the differences in the amount of weight the pigs gained?
A) Some piglets ate longer than others.
B) The pigs preferred pure feed to blended feed.
C) The more corn in the feed, the more weight the pigs gained.
D) The more wheat in the feed, the more weight the pigs gained.
5)

When communicating with Apollo astronauts, NASA scientists expect a 2.7 second delay in receiving responses from the moon. This is because
A) of the Doppler effect in space.
B) sound waves cannot travel through a vacuum.
C) radio waves travel at a speed of 186,000 miles/s.
D) of the scattering of electromagnetic waves in space.
6)
Through the process of sublimation; this pressurized frozen substance, goes from a solid state of matter directly to a gaseous state of matter when the temperature decreases to room temperature.. What substance is this?
A) water
B) dry ice
C) lithium
D) sodium chloride
7)
Suppose that two objects attract each other with a gravitational force of 32 Newtons. If the distance between the two objects is doubled, what is the force of attraction between them?
A) 8 N
B) 16 N
C) 32 N
D) 64 N
8)
reactions transfer energy to the surroundings, usually as heat.
A) Decomposition
B) Endothermic
C) Exothermic
D) Synthesis
9)

Consider the four spheres. As illustrated by the diagram, we would expect spheres A - C to be attracted to sphere D. Sphere D has the greatest gravitational force because as represented here, it
A) is the most massive.
B) has a negative charge.
C) is composed of a metal.
D) is on top of the other three.
10)

Through the miracles of medicine and technology, researchers have had some success with growing and transplanting hollow, relatively simple organs such as tracheas and bladders. Building solid organs like the kidneys or complex organs like the heart have proved to be much more difficult.
Considering how the body is organized, give one reason why it is so difficult for scientists to build a heart.
A) The heart is a pump made of muscle and that is difficult to grow in the lab.
B) Even if researchers build a heart, there is no guarantee that a person's body will accept it.
C) Human hearts are not like any other animal hearts so there is not source for cells and tissues.
D) The heart is made up of many different types of cells that are organized into different tissues.
11)

The batter swings the bat and makes contact with the ball. When this occurs, the kinetic energy of the bat is transferred to the ball. is NOT a possible form of energy that the kinetic energy could be tranformed into.
A) chemical
B) heat
C) kinetic
D) sound
12)
Physical and chemical changes occur during digestion. An example of a physical change during digestion is
A) teeth chewing food.
B) acid mixing with food.
C) saliva mixing with food.
D) enzymes mixing with food.
13)
Cassette tape record often include extra pops and noise. Digital recordings only include the actual recorded sound. Which statement is the best conclusion based on these facts?
A) Digital recordings are more reliable than the older method.
B) Digital recordings are require less space than the older method.
C) Digital recordings are less expensive to produce than the older method.
D) Digital recordings are can be transmitted faster than the older method.
Gr