What is weathering? What causes weathering? (hint: three answers)
It is the wearing away and breaking apart of rock. Wind, water, and plants can cause weathering.
100
What is a fossil?
It is something that remains of a living thing from long ago.
100
What is a natural resource? What are some examples of natural resources?
It is something found in nature that people need or use. Examples: Air, water, soil, trees, and rocks
100
What does conserve mean?
You use less of it to make it last longer.
200
What is a rock?
It is a solid made of one or more minerals.
200
True or false? Water that moves across rocks can NOT make its edges smooth and rounded.
False.
200
Which of the following in NOT a way that a fossil might form? a.) A leaf makes an imprint in mud, and the mud turns into a rock. b.) An animal bone gets covered in layers of mud, and it turns into rock. c.) An animal's fur gets caught in a tree, and it turns into a rock. d.) The tooth of an animal gets covered in mud, and it turns in a rock.
c.) An animal's fur gets caught in a tree, and it turns into a rock.
200
Which resources help make electricity?
Steam by burning coal makes electricity. Wind and moving water can also power machines that make electricity.
200
What does recycle mean? Name four things you can recycle.
Recycle is when you collect items made of materials that can be used to make new items.
Paper, plastic, cans, glass, cartons,
300
What are some different ways people use different kinds of rocks? Answers may vary.
People carve softer rocks into statues. They use hard rocks to make buildings and tabletops. Minerals from some rocks are used to make jewelry.
300
What is erosion? What is gravity? Does gravity cause water to go downhill or uphill?
Erosion is the carrying of weather rock and soil from place to place. Gravity is a pull toward the center of Earth. It causes water to run downhill.
300
Which of the following shows how fossils give clues about things that lived long ago? a.) an imprint of a plant shows how it might have looked b.) a tooth fossil can show how heavy an animal was c.) a bone fossil can show how fast an animal ran d.) a footprint fossil shows what an animal ate
a.) an imprint of a plant shows how it might have looked
300
What are four kinds of fuel?
wood, oil, coal, and gas
When they are burned, they give off heat. The heat is used to warm homes and to cook food.
300
What are two ways you can conserve water in your home?
Turn off the water while you brush your teeth. Wash full loads of clothes.
400
Soil contains humus and three other things. What are they? What is humus?
They are bits of rock, air, and water. Humus is tiny bits of dead plants and animals in soil. It contains nutrients that help a plant grow well.
400
What causes erosion? (hint: three answers)
They are water, wind, and gravity.
400
True or false? Scientists study fossils to learn how places on Earth have changed over time.
True. For example, a fish lives in water. When a fossil of a fish is found on land, scientists can infer that the land was once covered by water.
400
What are some things that people do that harm the environment? - Air, water, and land
Gases from cars and factories cause air pollution. Oil and other harmful waste spilled in water cause water pollution. Litter, or trash on the ground, causes land pollution.
400
What are some ways you can make positive changes that help the environment? Answers may vary.
Riding a bike or walking instead of driving
Picking up litter
Planting trees
500
How is soil important to all living things?
Plants get the water and nutrients they need from soil. In turn, animals get energy from plants. Some kinds of soil are better for the growth of certain kinds of plants (clay soil, sandy soil, topsoil).
500
Which of the following would NOT cause erosion? a.) sunlight on a warm sunny day b.) big waves crashing on a beach c.) wind and rain from a hurricane d.) glaciers moving down a mountain
a.) sunlight on a warm sunny day
500
How does a fossil imprint form?
When a living thing presses down in soft mud, it leaves a shape in the mud. Over time the mud turns to rock. The shape of a living thing found in rock is an imprint.
500
What does reuse mean? What are ways you reuse resources? Answers may vary.
Reuse means you use it again and again.
Old tires can be reused on a playground. You can pack your lunch in the same lunchbox every day. You can use a paper bag to wrap a gift.
500
How are water, trees, air, soil, and rocks a natural resource?
Water- drinking, washing, cooking
Trees- foods, trees, furniture
Air- breathing
Soil- growing food
Rocks- build homes and buildings