Show:
Matter and Energy
Force, Motion, and Energy
Earth and Space
Organisms and Environments
Vocabulary
100
A small bowl contains a mixture of toothpicks and glass marbles. The easiest way to separate the mixture without touching it would be to — A add glue to the mixture B place a magnet in the bowl C pour the mixture into a paper cone D add water to the bowl
D add water to the bowl
100
What type of energy travels in waves?
Light energy
100
Which of these cycles is a direct result of Earth’s rotation? A Day and night B Moon phases C Rainfall and evaporation D Seasons
A Day and night
100
Many types of plants grow in a forest ecosystem. How do plants affect the air that forest animals breathe? F Plants use oxygen from the air to make food. G Plants release pollution into the air. H Plants release energy from the sun into the air. J Plants take in carbon dioxide and release oxygen into the air
J Plants take in carbon dioxide and release oxygen into the air
100
structure or behavior that helps an organism survive
adaptation
200
What is the boiling point of water?
100 degrees celsius
200
Which type of energy is needed to change matter's physical state?
Thermal energy
200
Which of the following events in the water cycle is an example of solar energy being absorbed? A Water vapor condensing to form clouds B Water evaporating from the surface of an ocean C Rain freezing as it falls toward the ground D Clouds releasing precipitation over a mountain
B Water evaporating from the surface of an ocean
200
In a food chain, energy does NOT flow directly from — F producer to decomposer G producer to consumer H consumer to decomposer J consumer to producer
J consumer to producer
200
the life cycle of an organism whose appearance changes substantially at each of the four stages
Complete metamorphosis
300
A teacher mixes a white powder into a beaker of water. The powder cannot be seen in the water. The teacher then heats the mixture until the water evaporates and the powder can be seen again. Which property of the powder is the teacher demonstrating?
Solubility
300
When light passes through a microscope, what causes the image to appear larger?
Refraction
300
A student observed the apparent shape of the moon every night for a period of 60 days. On Day 10 the student observed a full moon. On which other day did the student most likely observe a full moon? A Day 20 B Day 30 C Day 40 D Day 50
C Day 40
300
Which of these is a learned behavior of a dog? F Begging for food G Drinking water H Panting on a hot day J Chewing on a bone
F Begging for food
300
the change from a gas to a liquid as a result of cooling
condensation
400
An unknown substance floated when put in a beaker of water. This is because...
The substance was less dense than the water
400
In order for electricity to flow through a circuit the switch must be....
Closed
400
Glaciers are masses of ice that move slowly on land. Which of these features was most likely formed by a glacier? F A wide valley G A deep ocean H A lava flow J A mountain range
F A wide valley
400
Most kangaroos have large, heavy tails, while spider monkeys have long, thin tails. Kangaroo tails are useful when the kangaroos are hopping and also when they are crawling around on the ground to feed. Spider monkey tails are useful when the spider monkeys are moving through trees. Both of these animals use their tails primarily for — F grabbing and holding their food G supporting and balancing their body H attracting the attention of other animals J carrying their young
G supporting and balancing their body
400
the general pattern of weather conditions in a region of a period of many years
Climate
500
An unknown substance has a definite volume, but no definite shape. What is its physical state?
liquid
500
Which of these best demonstrates the reflection of light? F Looking through the glass of a large window G Looking at an image formed on a silver spoon H Looking at a lightbulb that is glowing J Looking at a star on a clear night
G Looking at an image formed on a silver spoon
500
In fall and winter many trees lose their leaves in response to cooler temperatures and — A a decrease in average wind speed B fewer hours of daylight C an increase in humidity D more direct sunlight
B fewer hours of daylight
500
Some facts about birds called cattle egrets are listed below. Cattle Egrets 1. They have yellow bills and light-orange legs. 2. They make nests in trees away from predators. 3. They eat ticks off cattle while the cattle graze. 4. They are often found in the same fields as cattle. Which of these facts best describes how these birds depend on other animals to survive?
Fact 3
500
A nonrenewable resource formed from the remains of prehistoric plants and animals
Fossil Fuel