Matter & Changes
Why is air considered matter
Air is made of tiny particles, takes up space and has weight.
What is the original source of energy for most food chains?
The sun
What force pulls objects toward the center of the Earth?
Gravity
Where is most of Earth's water found?
The oceans as salt water
Which Earth system includes living things?
Biosphere
A sealed container has ice and water inside. After the ice melts, what happens to the total weight?
The total weight stays the same because no matter left the sealed container
What is the main difference between a producer and a consumer?
Producers make their own food. Consumers get energy by eating other organisms.
If the sun were much farther from Earth, how would it appear to us?
It would appear smaller and dimmer
What water cycle process moves liquid water from Earth's surface into the atmosphere?
Evaporation
Which Earth system includes rocks, soil, and sediments?
Geosphere
A student mixes salt and pepper, then adds water. What will most likely happen?
The salt dissolves in the water and the pepper does not dissolve as easily
Put this energy path in order: frog, sunlight, grass, grasshopper
Sunlight->grass->grasshopper-> frog
Why do moon phases repeat a pattern?
The moon orbits Earth, so we see different amounts of its lit side
Which holds more of Earth's fresh water?
Glaciers/Ice caps or Rivers
Glaciers and ice caps hold more
A plant takes in carbon dioxide from the air. Which two Earth systems are interacting?
Biosphere and atmosphere
A liquid and a powder are mixed. Bubbles form and the temperature changes. What kind of change is this evidence for?
A chemical change, because a new substance is formed
Two identical plants are grown. One gets sunlight and one gets very little. Which plant will most likely grow better?
The plant with more sunlight
Why can some star patterns be seen only during certain seasons?
Earth moves around the sun, so we face different parts of space during the year.
Which unit of measurement would make sense for describing the volume of water in a large pond?
Kiloliters
Hot lava flows down a volcano and kills plants. Which systems are interacting?
Geosphere and biosphere
Which tool and method could help measure the volume of an oddly shaped rock?
A graduated cylinder
What two substances do plants take in that help them make sugar during photosynthesis?
Water and carbon dioxide
A student tosses a ball straight up. What happens and WHY?
The ball slows, stops briefly, and falls back down because gravity pulls it toward Earth.
Name two examples of fresh water and one example of salt water on Earth
Fresh: rivers, lakes, glaciers, ground water, or ice caps
Salt: oceans
Name 1 example in each sphere (4 examples)
Answers may vary
Bio: Animals, plants, humans
Atmosphere, CO2, Nitrogen, air, etc.
Hydro: lakes, ponds, rivers, etc.
Geo: volcanoes, ground, etc.