Show:
Solar System
Motion and Machines
Sound
Light
Ecosystems
100
What is the 3rd planet from the sun?
Earth
100
Which is NOT an example of the effect of gravity? A. rivers flowing downhill B. the Moon orbiting the Earth C. a ball switching direction with hit D. a basketball falling through the hoop
C. a ball switching direction with hit
100
How are light and sound alike? A. both travel as rays B. both can vary in pitch C. both depend on vibrations in air D. both are forms of energy that travel in waves
D. both are forms of energy that travel in waves
100
You make a shadow more blurry by increasing A. the size of the object B. the shape of the object C. the distance from the object to its shadow D. the distance from the object to the light source
C. the distance from the object to its shadow
100
Which would be eaten by a herbivore? A. grass B. fish C. mouse D. dead snake
A. grass
200
Which is an outer planet? A. Earth B. Jupiter C. Mars D. Venus
B. Jupiter
200
Suppose Earth's mass increased. What would happen to the force of Earths gravity? A. It cannot be predicted B. It would stay the same C. It would become weaker D. It would become stonger
D. It would become stonger
200
What does the frequency of a sound wave determine? A. amplitude B. energy C. pitch D. volume
C. pitch
200
Which type of surface reflects light MOST clearly? A. angled and dark B. curved and clear C. dark and grooved D. smooth and shiny
D. smooth and shiny
200
Where do producers get energy? A. from consumers B. from sunlight C. from other producers D. from decomposers
B. from sunlight
300
Telescopes work by making objects look: A. bigger B. smaller C. darker d. rounder
A. bigger
300
The greatest force is needed to move a box that is A. 25 pounds B. 75 pounds C. 50 pounds D. 70 pounds
B. 75 pounds
300
Your outer ear A. gathers sound waves B. sends signals to the brain C. passes vibrations to the inner ear D. passes vibrations to the middle ear
A. gathers sound waves
300
Kim holds an object that is transparent. It can separate white light into colors. Kim has a A. lens B. magnifying glass C. mirror D. prism
D. prism
300
A species is said to be extinct when A. the last member of that species has died B. all of that species' habitat has disappeared C. few members of that species remain D. the species is related to organisms found only as fossils
A. the last member of that species has died
400
Earth gets the right amount of heat and light to support life because of Earth's A. small size B. short rotation C. number of moons D. distance from the sun
D. distance from the sun
400
A simple machine makes it easier to do work on an object because it A. decreases the force of gravity on the object B decreases the force needed to move an object C. reduces the weight of the object that is moved D. uses many parts to increase the force on an object
B decreases the force needed to move an object
400
Which part of the ear passes vibrations to the middle ear? A. eardrum B. outer ear C. inner ear D. nerve cells
A. eardrum
400
Evan's backpack reflects green light. It absorbs all other colors of light. What color is Evan's backpack? A. black B. white C. green D. brown
C. green
400
To pretect themselves, some insects are green and shaped like thorns. What is this adaptation called? A. hibernation B. mimicry C. pollination D. warning coloration
B. mimicry
500
The outer planets are dark and cold because they are A. close to the sun B. far from the sun C. close to each other D. far from each other
B. far from the sun
500
A construction worker adds wheels to a box to reduce A. the force of friction on the box B. the force of gravity on the box C. the weight of the bricks in the box D. the distance the box must be used
A. the force of friction on the box
500
A boy is plucking a stretched rubber band to make sounds. How can he changed the pitch? A. stretch the rubber band more or less tightly B. Pluck the rubber band harder or more softly C. Pluck the rubber band more quickly or slowly D. Move closer to or farther from the rubber band.
A. stretch the rubber band more or less tightly
500
Which type of material allows all light to pass through it? A. opaque B. reflective C. translucent D. transparent
D. transparent
500
Which must be true about the different parts of an ecosystem? A. They must share one source of energy B. They must interact with one another C. They must all be living things D. They must cover huge areas
B. They must interact with one another