Properties of Matter
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
What type of energy travels in waves?
Light energy
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
structure or behavior that helps an organism survive
adaptation
Clouds contain water vapor.
A. True
B. False
A. True
Which would change its property when added to water?
A. sand
B. salt
C. wood
B. salt
By placing a marble at different heights on a ramp a student can measure
A. how friction affects force.
B. how distance affects force.
C. how temperature affects force.
B. how distance affects force
How long does it take the moon to orbit around the Earth?
A. 24 hours
B. 29 days
C. 365 days
B. 29 days
In a food chain, energy does NOT flow directly from —
A. producer to decomposer
B. producer to consumer
C. consumer to decomposer
D. consumer to producer
D. consumer to producer
the general pattern of weather conditions in a region of a period of many years
Climate
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
When light passes through a microscope, what causes the image to appear larger?
Refraction
The tilt of the Earth’s axis causes the seasons.
A. True
B. False
A. True
Which of these is a learned behavior of a dog?
A. Begging for food
B. Drinking water
C. Panting on a hot day
D. Chewing on a bone
A. Begging for food
the change from a gas to a liquid as a result of cooling
condensation
An unknown substance floated when put in a beaker of water. This is because...
The substance was less dense than the water
In order for electricity to flow through a circuit the switch must be....
Closed
Glaciers are masses of ice that move slowly on land. Which of these features was most likely formed by a glacier?
A. A v-shaped valley
B. A deep ocean
C. A u-shaped valley
D. A mountain range
C. A u-shaped valley
A food chain is lots of food webs put together.
A. True
B. False
B. False
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
An unknown substance has a definite volume, but no definite shape. What is its physical state?
liquid
Which of these best demonstrates the reflection of light?
A. Looking through the glass of a large window
B. Looking at an image formed on a silver spoon
C. Looking at a lightbulb that is glowing
D. Looking at a star on a clear night
B. Looking at an image formed on a silver spoon
The path one object takes as it revolves around another object in space is called:
A. rotation
B. revolution
C. orbit
C. orbit
Many types of plants grow in a forest ecosystem. How do plants affect the air that forest animals breathe?
A. Plants use oxygen from the air to make food
B. Plants release pollution into the air.
C. Plants release energy from the sun into the air.
D. Plants take in carbon dioxide and release oxygen into the air
D. Plants take in carbon dioxide and release oxygen into the air
Precipitation occurs because
A. the droplets evaporate in the air.
B. the droplets are to light for the air to hold.
C. the droplets are too heavy for the air to hold.
D. None of the above
C. the droplets are too heavy for the air to hold.