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100
Which part of the plant brings water to all the other parts of the plant? A. stem B. tap root C. leaf D. flower
A. Stem
100
Complete the sentence. The planets in our solar system all A. orbit the Sun. B. produce light and heat. C. have moons. D. have a system of rings.
A. orbit the Sun.
100
Which one of these is an example of a solid? A. ice B. boiling water C. water vapor D. oxygen
A. ice
100
Which tool is used to measure the direction of the wind? A. barometer B. thermometer C. wind vane D. anemometer
C. wind vane
100
If you turn down the thermostat in your home in the winter time, which natural resource are you helping to conserve? A. fossil fuels B. water C. soil D. wood
A. fossil fuels
200
A population of elephants needs a steady supply of food. What is most likely to happen if there is not enough food? A. Nothing will happen. B. The elephants will become extinct. C. The elephants will help each other find food. D. The elephants will compete for food.
D. The elephants will compete for food.
200
What planet is closest to the Sun? A. Earth B. Saturn C. Mercury D. Uranus
C. Mercury
200
What happens to a metal spoon placed in boiling water? A. The spoon melts. B. The water evaporates. C. The spoon loses heat. D. The spoon gains heat.
D. The spoon gains heat.
200
Which tools have helped scientists learn about the planets and their moons? A. sonar and radar B. telescopes and microscopes C. satellites and microscopes D. telescopes and satellites
D. telescopes and satellites
200
What do you call an animal when there are only a very few of its kind left on Earth? A. metamorphosis B. endangered C. extinct D. threatened
B. endangered
300
Which living thing is an example of a carnivore? A. grass B. cow C. lion D. robin
C. lion
300
About how much of Earth's water is salty? A. 97% B. 50% C. 1% D. 100%
A. 97%
300
How can you separate a mixture of oil and vinegar? A. let the mixture evaporate B. let the mixture settle C. let the mixture freeze D. filter the mixture
B. let the mixture settle
300
Minnie wants to test how well different liquids conduct heat. Which tool would be most helpful to her? A. thermometer B. barometer C. rain gauge D. microscope
A. thermometer
300
What sentence about natural materials is true? A. Natural materials include rayon, nylon, and plastic. B. Natural materials include cotton, sand, and clay. C. Natural materials are made in factories and sold in stores. D. Natural materials do not need to be conserved.
B. Natural materials include cotton, sand, and clay.
400
Arjun finds a picture of his mother as a baby. His mother shows him other pictures. There is a picture of his mother as a teenager. There is a picture of his mother and father getting married. There is also a picture of Arjun as a tiny baby. What do these pictures describe? A. how the family makes food B. life stages of people C. the process of succession D. what the family needs to survive
B. life stages of people
400
All of the following are ways used to identify minerals EXCEPT A. hardness B. luster C. location D. streak
C. location
400
Balanced forces are acting on an object. What might this mean? A. The object is slowing down. B. The velocity of the object is changing. C. There is no change in motion. D. The object is experiencing a magnetic force.
C. There is no change in motion.
400
What scientific discovery led to the invention of the light bulb? A. gravity B. atomic theory C. electricity D. vibrating quartz crystals
C. electricity
400
Gina wants to measure wind speed. Which tool should she use? A. an anemometer B. a barometer C. a thermometer D. a weather balloon
A. an anemometer
500
Suppose a scientist finds a fossil of a woolly mammoth on the bottom of the ocean. What can the scientist infer from her discovery? A. Someone placed the fossil in the ocean. B. The area was not always covered by water. C. The mammoth lived in the water. D. There were fewer mammoths in ancient times.
B. The area was not always covered by water.
500
Hideki sees nimbostratus clouds in the sky. What can Hideki predict from these clouds? A. There will be fair weather. B. There will be rain. C. There will be good visibility all day. D. The weather will stay just as it is.
B. There will be rain.
500
Ian has a bar magnet and a pile of paper clips. He holds the magnet over the paper clips, but none of them is picked up by the magnet. What might explain Ian's results? A. The paper clips were bent. B. The paper clips were made of plastic. C. The paper clips were too small. D. The paper clips were made of iron.
B. The paper clips were made of plastic.
500
Mandori and Fernando are planning an experiment. They want to find out how temperature affects different plants. What should they do first? A. Reach a conclusion based on observations. B. Ask questions and develop a hypothesis. C. Construct a pie chart to present the information. D. Communicate their findings to the class.
B. Ask questions and develop a hypothesis.
500
Pablo is playing his guitar. He shortens the strings and strums hard. What will the sound be like? A. The sound will be soft and high in pitch. B. The sound will be soft and low in pitch. C. The sound will be loud and high in pitch. D. The sound will be loud and low in pitch.
C. The sound will be loud and high in pitch.