Vocabulary
A ________________________model has length and width.
two-dimensional
Ahmed wants to make a 2-D picture model of his classroom drawn from a view that is looking down from the ceiling. Which of the following would he not be able to include in his model?
a. distance from the floor to the ceiling
b. distance from the door to the opposite wall
a. distance from the floor to the ceiling
A scientist observes people in her lab as they use pens to write. She records the names of left-handed people and those of right-handed people. She compares how many people are in each group. Which statement describes the scientist’s investigation?
a. The scientist organizes her data.
b. The scientist conducts an experiment.
a. The scientist organizes her data.
Abdullah is studying parts of a plant. Which tool would be most useful if Abdullah wants to see parts of a leaf?
hand lens
A _____________________ model has length, width, and height.
three-dimensional
A class was discussing whether to make a 2-D or 3-D model of their classroom. They listed a number of advantages and disadvantages of each. They are now debating which model to make. Which of the following is an advantage only for a 3-D model?
a. easy to store
b. can show the height of objects in the room, such as a desk
b. can show the height of objects in the room, such as a desk
Khadijah compares how fast a fig plant grows with how fast a spider plant grows. Which of these would be the best way to communicate her data to the rest of the class?
a. A graph
b. Another experiment
A. A graph
A _________________________________ is used to measure mass with units called grams (g).
pan balance
Define: Model
In science, a model represents something real that is too big, too small, or has too many parts to investigate directly.
Some models have three dimensions. The dimensions are length, width, and height. Which model below has three dimensions?
a. plastic model of a skeleton
b. photograph of a skeleton
a. plastic model of a skeleton
How can data be organized?
a) A chart or graph
b) An experiment
A _________________________________ is used to measure force in units called newtons (N).
spring scale
What is evidence?
data that support or reject a hypothesis
Asiyah makes two models of Earth’s layers. She draws one model using construction paper. She uses an apple for the second model. What is true about these models?
a. Both models are three-dimensional.
b. Both models suggest how thick each layer is compared to other layers.
b. Both models suggest how thick each layer is compared to other layers.
True or False. Data can be made up information.
False
A _________________________________ is used to measure temperature. This tool has two sets of units: degrees Celsius and degrees Fahrenheit.
What is a hand lens?
A hand lens is a tool that magnifies small objects and makes them look bigger.
Abdul-Rahman studies a model of a human heart. The heart has parts that Abdul-Rahman can remove and hold in his hands before he puts the model back together. What kind of model is Abdul-Rahman using?
three-dimensional
True or False. Data is information that is collected and recorded.
True.
A ______________________ is a tool for looking at objects that cannot be seen with eye alone.