OBJECTIVE 1

OBJ 1

• April 2009 Exit Level

• 4,7,9,11,15,17,20,23,31,38,39,42,49,51,53 55

OBJ 1This diagram shows

light being refracted. Which tool would measure the angle of the light bending?

A. Ruler

B. Compass

C. Protractor

D. D. Thermometer

OBJ 1

How is the picture categorized?

OBJ 1Fossilized mammal remains found = 130-165 million years ago

Earliest known bird = 150 million years ago

CONCLUSION = Birds and mammals started flying around the same time

HOW COULD THE CONCLUSION BE MOST WEAKENED

100 million - bird 160 million -mammal120 million - bird 200 million -mammal

OBJ 1A student uses a hotplate, thermometer, and a

stopwatch to investigate the rate at which an object conducts heat. To ensure the most reliable results, what should the student do?

A. Perform a 2nd investigation – different tools

B. Use several thermometers to monitor temp

C. Develop a hypothesis before starting invest.

D. Repeat the entire investigation several times

OBJ 1• A circle graph would best help a

student communicate a conclusion about an investigation involving?

A. the proportions by mass of 3 metals in an alloy

B. the amounts of heat released by 3 chemical reactions

C. the amounts of force required to accelerate 3 different masses

D. the electrical conductivity of 3 salt solutions

OBJ 1• Which of the following information

would allows the most direct calculation of speed of the rocket on its upward flight

A. Thrust force and wind speedB. Maximum height and the time it takes the

rocket to reach itC. Rocket mass and the time it takes the

rocket to reach its highest pointThrust force and the time it takes the rocket

to fall to the ground

OBJ 1A scientist hypothesizes that the use of a

propellant rather than the traditional fuel mixture would cause a rocket to rise higher in the air. A proper control for the experiment would be a rocket that uses?

A. The traditional propellantB. The alternative propellantC. No propellantsD. A mixture of both propellants

OBJ 1

Which of these is the best

label to have on a reagent bottle

OBJ 1Which of the following best

describes a trend for the cells in this root tip?

A. Cells mostly larger at top than bottom

B. The # of nuclei per cell increases toward the bottom of the root

C. The cells are shorter, the closer they are to the outer surface of the root

D. The number of cells per area of the root is generally constant

OBJ 1

Half of the tube is applied to a pair of tennis shoed and allowed to dry completely. How much mass will the shoes gain?

OBJ 1• Some students investigate the rusting

rates of 4 metals in saltwater. To best find the rusting rates. The students should measure the masses of the metals before the investigation and at?

A. The same time/day during each weekB. Different times/days during each weekC. Any time/during 1st weekD. One randomly selected time/during

investigation

OBJ 1• An advertisement for a new medication

claims that patients can lower body cholesterol by 25-45%. If the claim is accurate, patients will benefit most from this medication are those who?

A. Have high cholesterol

B. Consume small amounts of cholesterol

C. Want to eliminate cholesterol

D. Are aware of cholesterols effects

OBJ 1• In addition to a hot plate and beakers,

which of these items are needed to test this hypothesis

A. Test tube, barometer, thermometer

B. Balance, thermometer, hand lens

C. Stopwatch, microscope, test tube

D. Thermometer, stopwatch, balance

OBJ 1

• If you came up with how to categorize diseases….step by step…how can you prove that what you came up with is valid?

OBJ 1• An advertisement for tea claims the

tea…improves the immune system. This claim implies that the tea?

A. Helps the body produce antibodies

B. Accelerates the process of digestion

C. Prevents bacteria from enetering cells

D. Keeps the body from being exposed to viruses

OBJ 1• A student investigates the effects of 5 brands

of fertilizer on plant growth and concludes that Brand X works best. Which of the following best communicates this conclusion?

A. A list of the ingredients in each brand of fertilizer used

B. A graph showing the growth rate of plants growin with the different fertilizers

C. A decription of the role of different nutrients in plant growth

D. A diagram showing the conditions in which each plant grew

OBJ 1• Scientists recently found a fossil

representing a newly discovered animal species that they named Tiktaalik roseae. The fossil indicates that Tiktaalik roseae had a fish-like jaw and scale-covered fins. The front fins had bones similar to those of a shoulder, an upper arm, and elbow, a forearm, and a wrist. This information suggests that populations of Tiktaalik roseae most likely lived in which 2 environments?

A. Saltwater / freshwaterB. Water/LandC. Land/treetopsD. Glaciers/Caves