Life Science
A partial food chain in a meadow ecosystem is shown in the illustration.
Sun → Alfalfa →Grasshoppers →Ground Squirrels →Rattlesnakes
Based on the food chain, which phrase describes the energy flow from a consumer to another consumer?
A. from the grasshoppers to the alfalfa
B. from the alfalfa to the grasshoppers
C. from the ground squirrels to the rattlesnakes
D. from the ground squirrels to the grasshoppers
C. from the ground squirrels to the rattlesnakes
Florida has many different natural resources. Which of the following resources would be most useful in the production of energy for homes and businesses?
A. limestone
B. phosphate
C. silica
D. wind
D. Wind
What is a variable?
something that changes throughout the experiment
What is mass?
A. The amount of matter in an object
B. The amount of space an object takes up
C. The three states of matter
D. two substances that create a new identity
A. The amount of matter in an object
What are the three main types of rocks?
Sedimentary, metamorphic, and igneous
A scientist is observing behavioral adaptations of a North American porcupine. The porcupine is a mammal that climbs trees and has hardened fur called quills on its back and tail. Which of the porcupine’s adaptations is best described as a learned behavior rather than an inherited behavior?
A. using its quills to defend against predators
B. returning to the same tree for protection
C. staying in a den during the winter
D. searching for food at night
B. returning to the same tree for protection
Minerals are identified by observing and testing their physical properties. Which of the following statements describes a physical property used to identify a mineral?
A. This mineral makes a black streak.
B. This mineral has a mass of 16 grams.
C. This mineral formed a long time ago.
D. This mineral was found at a local rock quarry.
A. This mineral makes a black streak.
Jacob mixes cooking oil and vinegar in a beaker. He records his observations and his inferences about the mixture. Which of the following statements is an observation about this mixture rather than an inference?
A. The liquids form two separate layers.
B. The cooking oil will never completely mix with the vinegar.
C. The cooking oil floats because it has less mass than the vinegar.
D. The liquids will take the shape of any container into which they are poured.
A. The liquids form two separate layers.
A student is shopping with her father and observes that it is harder to push the shopping cart as more items are placed into the cart. Which of the following statements gives the most likely reason for her observation?
A. As more items are loaded into the cart, the air resistance increases.
B. As more items are loaded into the cart, the balanced force increases.
C. As more items are placed into the cart, the mass of the load increases.
D. As more items are placed into the cart, the height of the load increases.
C. As more items are placed into the cart, the mass of the load increases.
In what direction does heat flow?
From a warmer object to a colder object
Muscles and the skeleton work together to help keep humans healthy. Which of the following phrases best describes the function of the muscles and the bones of the skeleton?
A. provide support and protection to the body
B. warm the body when the temperature is cold
C. control body movement and collect information
D. guard the body against harmful viruses and germs
A. provide support and protection to the body
What are the four main phases of the moon?
First quarter, full moon, third quarter, new moon
A testable question is called a what?
A hypothesis
A student wants to know how to make salt dissolve quickly in water. The student places a large piece of salt in a cup of warm water. The student measures how much time it takes for the salt to dissolve. Which of the following actions would best help the piece of salt dissolve faster?
A. Crush the salt.
B. Add more water to the cup.
C. Add the salt to the cup first.
D. Decrease the temperature of the water.
A. Crush the Salt
Conductors don what in electricity?
A. Carry electricity
B. Reduce the flow of electricity
C. Stop electricity
D. Nothing
A. Carry electricity
The Florida Keys are a group of small islands. Human activities can have positive or negative effects on this ecosystem. Which of the following human activities would most likely have a positive effect on the Florida Keys ecosystem?
A. restoring the habitats of native animals
B. releasing nonnative animals into the wild
C. increasing fertilizer use on grasses and trees
D. removing grasses and trees from areas to be developed
A. restoring the habitats of native animals
Gina looks at the stars in the clear night sky. She notices that some stars are brighter than others. Which of the following characteristics do the brighter stars have compared to the other stars?
A. The brighter stars reflect more light from the Sun.
B. The brighter stars give off less energy.
C. The brighter stars are closer to Earth.
D. The brighter stars have planets.
C. The brighter stars are closer to Earth.
What is a control group?
The one that stays the same throughout the experiment
Which of the following is an example of a chemical change?
A. Burning wood
B. An ice cube melting
C. Tearing Paper
D. Breaking a log
A. Burning wood
Minerals are the building blocks of what?
Rocks
Scientists discover a new animal in the Florida Everglades. Some information about the animal is listed below.
• Has a backbone
• Is cold blooded
• Is covered with scales
Which additional information would help the scientists classify this animal as a fish rather than a reptile?
A. Lays eggs
B. Eats small animals
C. Breathes using gills
D. Swims in fresh water
C. Breathes using gills
How many days does it take the moon to go through the whole cycle?
A. A year
B. 2 weeks
C. 1 month
D. one day
C. 1 month
What is the difference between an investigation and an experiment?
an investigation studies facts and observations WITHOUT variables and does NOT use the scientific method
A solid has which of the following properties?
A. Definite volume and definite shape
B. It takes the shape of its container and has a definite volume
C. It has no definite shape or volume
D. It has a definite shape but no volume
A. Definite volume and definite shape
What are the 6 forms of energy?
Chemical, mechanical, heat, light, sound, electrical