4th Grade Mid Year Science Review

Which evidence is not the result of an observation?

• The object traveled 120 centimeters.

• The mass of the object is 5 grams

• The catapult launch arm is 9 centimeters long.

• My catapult is stronger than my friend's catapult.

When we use the scientific method to answer a question, the question must include evidence that can be measured. Which of these questions is least likely to be tested using the scientific method?

• How much water does a plant need to grow?

• Do robins prefer a certain type of seed?

• What is the fastest route to school?

• Are dogs better pets than cats?

Which statement is the best example of data?

• Dawn is 165 centimeters tall.

• Jonas and Tim are best friends.

• Hugo likes peaches better than pears.

• Macy is unsure that her measurements are accurate.

Which statement presents evidence that a scientist could use to make a conclusion?

• Dogs are smarter than cats.

• Popsicle sticks make the best models.

• A desk is easier to move if it is on wheels.

• Chocolate cake tastes better than vanilla cake.

Tags

NGSS.MS-LS2-4

Scientists study the natural world. Evidence is an important part of their studies. What is evidence?

• an opinion

• data collected

• questions asked

• predictions made

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-4

Mr. Johnson created a laboratory investigation for his students. The investigation was about using balance scales. The students were divided into three groups. Each group was required to find the mass, in grams (g), of the same items. After looking at the data, Mr. Johnson noticed Group 3 had different results. What is the most likely cause of these different results?

• The students in Groups 1 and 2 worked together and copied.

• The students in Groups 1 and 2 used items with smaller masses.

• The students in Group 3 used twice the items the other groups used.

• The students in Group 3 had a balance that was not working properly.

Why is it important for a scientist to record each step of an experiment exactly the way it was done?

• so the scientist can become rich

• so the scientist can do a different experiment

• so another scientist can look at their experiment and completely change it

• so another scientist can follow the directions and do the same experiment

Tags

NGSS.MS-PS2-5

Becky and Carlotta are conducting an experiment in which they measure the distance a toy car travels down a ramp. They place the ramp on a book, let the car go, and record their results. They add more books to increase the angle of the ramp. All the students in Becky and Carlotta's class take turns doing the experiment. They all follow the same procedure and use the same cars and number of books. Becky and Carlotta's results are very different from the results of the other students in the class. What should they do next?

• get new toy cars and repeat the experiment

• repeat the experiment and compare results again

• get a different type of ruler to use when measuring

• change their data to match their classmates' data

Tags

NGSS.MS-PS2-2

Christy looks out the window to check the weather before getting ready for school. She wrote the following notes in her journal. 1. It is cloudy. 2. It rained last night. 3. The ground is wet. 4. The ground is black. Which note is an inference?

• 1

• 2

• 3

• 4

Why is it important to write detailed step by step directions when writing a procedure?

• to help organize the data

• to be creative with the experiment

• to help design a better experiment

• to make it possible for others to repeat the experiment

Tags

NGSS.MS-PS3-4