Nature of Science
The student has a friend who performs the same experiment the exact same way. Why does the friend expect the results from both tests to be the same?
Experiments should be reproducible by others.
The Earth spinning on its axis causes this to happen.
Day and Night
Organisms that make their own food.
Producer
Push or pull on an object
Force
What is the source of all energy in an ecosystem
a. producers b. consumers
c. decomposers d. sun
Sun
A student wants to know if the number of butterflies in the playground changes from spring to summer. Which would be the best way to investigate her question scientifically?
A
Observe and record the number of butterflies in the playground, once each week, from March to August.
B
Ask other students to count the number of butterflies they see in the playground on different days and compare the data.
C
Look for information on the internet about the number of butterflies observed in nearby areas during spring and summer months.
D
Find out which plants in the playground attract the most butterflies and count the number of butterflies near those plants once each month.
Observe and record the number of butterflies in the playground, once each week, from March to August.
moon phase 7 days before a third quarter moon.
full moon
A small fish will eat other smaller fish, or algae from a lake. It is known as an ___
Omnivore
A student pushes a box, but it doesn’t move. This means the forces are…
Balanced
What is responsible for things falling?
Gravity
Joseph 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.
Luis sent a map of constellations visible in the Northern Hemisphere to his cousin in the Southern Hemisphere. His cousin said he could not use the map. Why couldn’t he?
The stars on the map can only be seen in the Northern Hemisphere.
Consider this food chain: grass=> grasshopper=> mouse => snake Which organism is an herbivore?
Grasshopper
This force opposes motion when two surfaces touch or rub together
Friction
Name an insulator of electrical energy
plastic, rubber, cardboard, glass...
In science class, students will complete the activities listed below to learn about birds. Which student activity can be completed using scientific experimentation?
Activity 1 -Keep a list of birds observed in the schoolyard.
Activity 2-Make models of the different types of bird beaks.
Activity 3-Use the Internet to find information about birds native to Florida.
Activity 4-Find out whether birds in the schoolyard prefer cracked corn or sunflower seeds.
Activity 4
Day to day, hour by hour changes in the conditions in atmosphere (air around you)
Weather.
What is the function of a leaf?
food production
Cindy places a marshmallow in the spoon and pushes down on the spoon. She then releases the spoon and observes the marshmallow. Which of the following best describes what Cindy observes?
A Some properties of materials can be changed to cause an object to move.
B The greater the pull of gravity, the faster an object will move.
C Some forces can make objects move without any contact.
D Energy added to a device can cause an object to move.
Energy added to a device can cause an object to move.
Part of a desert food chain is shown below.
Sun-Cactus- ?- Snake- Fox
A food chain traces the flow of energy from the Sun through several organisms. Which type of organism should be included to complete the flow of energy in this food chain?
herbivore
Turtles are cold blooded, meaning they use the Sun to keep warm. A student hypothesizes that his pet turtle will prefer swimming in warm water. He places his turtle on a rock in the middle of the bathtub, and measures how much time the turtle spends off the rock during a five minute period. He conducts the experiment under four conditions in the bathtub: no water, warm water, cool water, and room temperature water. In this experiment, which is the control group?
The empty tub, because it shows if the results are random.
Why does the Sun appears to travel across the sky during the day
because Earth rotates on its axis.
A scientist is observing behavioral adaptations of a North American porcupine. 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
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. What actions would best help the piece of salt dissolve faster?
Crush the salt.
Mrs. Nelson is demonstrating to her class how to use physical properties to identify minerals. She taps a piece of graphite with a hammer, and the graphite splits into thin sheets. Which property is the teacher demonstrating?
cleavage