Amy wants to compare close-up views of different bird feathers. Which tool should she use?
Microscope
100
What determines the length of a planet's day?
Rotation
100
Name the three types of rocks.
Sedimentary, igneous, and metamorphic
100
Name the three states of matter.
Solid, liquid, and gas
100
Fill in the blank!
In a chemical change, one substance will _____________ with another substance.
react
200
A scientist is using the scientific method. She studies a table of data she has collected and recorded. She decides what the results mean. What does the scientist do next?
She draws a conclusion.
200
A group of stars form a pattern in the sky. What is this pattern called?
Constellation
200
Which type of resource is wind power, renewable or nonrenewable?
Renewable
200
What is the process of liquid turning into a gas when heat is applied?
Evaporation
200
Over time, dead plants and animal materials ____________, or are broken down into simpler substances.
decay
300
What is the difference between an experiment and investigation?
An experiment tests something while an investigation answers questions.
300
Name four phases of the moon in the correct order.
First Quarter, Full Moon, Third Quarter, New Moon
300
Scientists can manufacture diamonds from carbon by using heat and pressure. These man-made diamonds are not classified as minerals. Why?
They are not naturally occurring.
300
What happens when you put the north and south pole of two magnets together?
Magnetic force will pull the magnets together.
300
Explain the difference between a physical and chemical change.
A chemical change is when a new substance is formed and a physical change does not create a new substance.
400
Mia wants to know how fast a ball rolls down a ramp. Which action would best help her find this out?
Measure the ball's speed.
400
Why are certain constellations not visible everywhere on Earth all year long?
Earth's revolution
400
Explain the difference between erosion and weathering.
Weathering is the process of rock breaking apart and erosion is the process of moving weathered rock.
400
What are the 7 physical characteristics to describe matter?
Hardness, Color, Size, Taste, Texture, Odor, and Shape
400
Roasting a marshmallow over a fire is what type of change?
Chemical change
500
What do scientists use to represent the real object during an experiment/investigation?
Model
500
In the United States, an August day is usually hotter than a January day. Why is this true?
Earth's North Pole is titled toward the sun in summer and away from the sun in winter.
500
Name four physical properties that can identify a mineral.
Hardness, Luster, Streak, and Cleavage
500
What is density?
The amount of matter present in a certain volume of a substance.
500
From the time it was first built, a boat sat in a storage building. The boat has changed from when it was new. The iron sides of the boat have formed iron oxide. The sides crumble and break when touched. The wooden parts of the ship are in great condition. What happened to the boat?