Which statement best describes what must happen in order for a person to lift an object?
A. The upward pull or push on the object must be greater than the force of gravity.
B. The mass of the object must be greater than the force of gravity.
C. The force of gravity must be greater than the upward pull or push on the object.
D. The force of gravity must be greater than the mass of the object
What is letter A
100
What is a small body that orbits the Sun and has a tail?
What is comet
100
What happens to light at the surface of water that creates an upside down image of things on land?
What is light reflecting off the water
100
A decomposer is an organism that gets its energy from
What is breaking down dead plants and animals
100
What kind of pitch does a thick rubber band make?
What is low pitch
200
Look at diagram 4A. What is this graph describing?
What is speed
200
Look at diagram 4B. Which of the four planets in the table has the longest year?
What is Mars
200
When light strikes the water in a glass, most of the light is reflected or refracted. What happens to the rest of the light?
What is absorbed by the water
200
Look at diagram 4C. Which organisms are consumers?
What is grasshopper, frog, and heron
200
What medium will stop a sound wave?
What is vacuum
300
Look at diagram 4A. What was the speed of the car?
What is 8m/sec
300
Look at diagram 4B. Which planet in the chart has the shortest day?
What is Jupiter
300
Why can you see through a glass window and at the same time see your image in the window?
What is some light is being transmitted and some light is being reflected?
300
Look at the diagram 4C. Label each organism (carnivore, herbivore, omnivore, producer)
Grass (producer), grasshopper (herbivore), frog and heron(carnivore)
300
Which of the following statements is true?
A. Something can produce a sound without producing a vibration.
B. Something cannot produce a sound if it also produces a vibration.
C. Something must first produce a vibration before it can produce a sound.
D. Something must first produce a sound before it can produce a vibration.
What is C
400
A car moves along a road that has markers every kilometer. Over time, it passes the markers in shorter periods of time. Which best describes the motion of the car?
What is increasing in speed
400
A group of planets that revolve around a central star
What is solar system
400
Why do many people wear bright or light colored clothes in the summer?
What is these colors reflect more light rather than absorb light so you stay cooler.
400
Sharks and other predators do not normally eat plants. However, they do receive some energy from plants. How is this possible?
What is some of the animals predators eat have eaten plants
400
If you tighten the knobs on a guitar, what does the tightening the strings do to the pitch?
What is pitch is higher
500
How fast are you going if you are traveling 300 miles in 5 hours?
What is 60mph
500
All of the stars are part of the universe. The stars that people see from Earth seem to form patterns. What is the name for these patterns?
What is constellations
500
The deeper a person goes down in the ocean water, changes occur. Give two changes
What is water is darker, colder, and pressure is higher
500
Select each correct answer. More than one answer may be correct. How do decomposers help an ecosystem?
A. Decomposers use sunlight to make food for an ecosystem.
B. Decomposers restore essential nutrients to an ecosystem.
C. Decomposers keep dead matter from "piling up" in an ecosystem.
What is B and C
500
Give the steps in order that must occur for someone to be able to hear a guitar?
What is pluck the strings, strings vibrate, air surrounding guitar vibrates, ear drum vibrates