Vocabulary
The structure on a plant that helps the plant make food
A scientist looks at a graph of the results of his experiment. He draws a conclusion about the results. What is one way the scientist uses his conclusion?
a. to decide whether his results are correct
b. to decide whether his hypothesis is correct
c. to decide whether he should make a different conclusion
d. to decide whether he should share his results with others
b. To decide whether his hypothesis is correct
Which vegetable is a root?
a. carrot
b. broccoli
c. celery
d. cabbage
a. carrot
Earth rotates on its axis once every 24 hours. What is the result of Earth's rotation?
a. the seasons
b. night and day
c. the moon's phases
d. the length of the year
b. night and day
To make sure your measurements are clear, it is important to use appropriate units. Which of these is a unit of time?
a. gram
b. liter
c. meter
d. minute
d. minute
Resources that take thousands or millions of years to replace
Nonrenewable Resources
What is the first step a student should take when designing a new boat?
a. identify needs the boat will meet
b. build a test model of the boat
c. brainstorm solutions to problems with the boat
d. test the design
a. identify needs the boat will meet
Which statement about non-vascular plants is correct?
a. they have roots that take in water
b. they have root-like structures that anchor the plant in the soil
c. they make up the majority of all plants
d. they do not use photosynthesis to make food
b. they have root-like structures that anchor the plant into the soil
All matter has certain properties. Which of the following can be classified as matter?
a. the number 25
b. a dream
c. the day Monday
d. a puddle of water
d. a puddle of water
Many appliances in your home and school use electrical energy. Which of these appliances is intended to convert electrical energy into sound energy?
a. printer
b. refrigerator
c. electric fan
d. radio
d. radio
Anything that takes up space and has mass
Matter
A company decides to make a new type of snow sled. the sled should slide easily but stop safely. What should the company do next?
a. make changes
b. test the design
c. make a prototype
d. brainstorm solutions
c. Make a prototype
Which list shows everything that plants need to produce their own food?
a. oxygen, carbon dioxide, sugar
b. sugar, water, carbon dioxide
c. sunlight, carbon dioxide, water
d. carbon dioxide, water, sugar
c. sunlight, carbon dioxide, water
Kaleesha says that taste is not a property of matter. Which statement below BEST describes why Kaleesha is not correct?
a. taste does not have mass
b. taste has a density less than water
c. you cannot measure the volume of taste
d. taste is a physical property that can be described
d. taste is a physical property that can be described
Cars, bicycles, animals, and people are all objects that can be in motion. Which statement about motion is correct?
a. an object in motion is accelerating.
b. motion is the change in position of an object
c. gravity and friction are responsible for all motion
d. an object in motion has no speed, but it does have velocity
b. motion is the change in position of an object
The test version of a design
Prototype
Sarah and Lilly are testing their prototype of a paper airplane. It rises up briefly but then crashes to the floor. What should they do next?
a. start over
b. redefine the need
c. keep better records
d. redesign the prototype
d. redesign the prototype
Which adaptations would you expect in animals that live in caves?
a. very good hearing
b. poor hearing
c. very good eyesight
d. brightly colored fur
a. very good hearing
Which of the following is a physical change?
a. burning
b. evaporating
c. rusting
d. tarnishing
d. tarnishing
Suppose you rub a plastic object on a piece of fur, causing static electricity to form on both objects. The fur now has a positive charge. What happened to the plastic object?
a. it lost protons
b. it lost electrons
c. it gained protons
d. it gained electrons
c. it gained protons
Helps capture energy from the Sun
Chlorophyll
Tai is designing a capsule to prevent an egg from breaking when dropped from a distance of 2 meters. He has made sketches of his design. What is the next step that Tai should take in the process?
a. test the model
b. construct the design capsule
c. evaluate the design for revision
d. collect and analyze the test results
b. construct the design capsule
Water on Earth constantly moves between Earth's surface and its atmosphere. How does water arrive at Earth's surface.
a. through runoff
b. through evaporation
c. through condensation
d. through precipitation
d. through precipitation
Kaylie was describing the physical properties of an orange and a lemon. Which two physical properties can she determine without using any measurement instruments?
a. mass and color
b. texture and volume
c. odor and taste
d. shape density
c. odor and taste
A boy walks across a carpet on a cold day. then, he starts to touch a doorknob, and a spark jumps from his finger to the doorknob. If the boy's hand has a negative charge, what is the charge on the doorknob?
a. negative
b. neutral
c. positive
d. both positive and negative
c. positive