Matter and Atoms
What are all living and nonliving things made of?
Atoms
What happens to an object's energy of motion when it moves faster?
It increases.
What force pulls a dropped ball toward Earth?
Gravity.
A table shows 2 tricks with 1 treat and 4 tricks with 2 treats. What increased?
Both the treats and the number of tricks.
What do scientists ask before beginning an investigation?
A question they want to answer.
What is matter?
Anything that has mass and takes up space.
Which has more energy of motion: a fast car or an otherwise identical slow car?
The fast car.
What keeps the International Space Station in orbit around Earth?
Earth's gravity.
A student records 5, 7, and 9 centimeters. What is being recorded?
Data or measurements.
What is a prediction about what will happen in a lab called?
A hypothesis
Name one measurable property of matter.
Mass, volume, or another measurable property such as shape.
What is energy of motion commonly called?
Kinetic Energy
What is the gravitational force on an object called?
Weight
A dog performs 5 tricks with 1 treat, 7 with 2, and 8 with 3. How many tricks did it perform with 2 treats?
7 tricks.
What do we call the steps used to test a scientific question?
An experiment or investigation.
Which is matter: air, sound, or gravity?
Air.
Two identical toy cars move at different speeds. Which has more energy of motion?
The fast- moving one
What is the difference between mass and weight?
Mass measures the amount of matter; weight is the gravitational force on an object.
As treats increase from 1 to 4, tricks go 5, 7, 8, 7. Do tricks increase every time?
No. They decrease from 8 to 7.
Why should a scientist record observations and measurements?
To collect data and use evidence to answer the question.
A rock and a drop of water are different, but what do they both contain?
Atoms.
If a toy car speeds up, what happens to its energy of motion? Explain.
It increases because the car is moving faster.
Why does a ball thrown upward eventually fall back down?
Earth's gravity pulls it toward Earth's center.
Why should a scientist look for patterns in a data table?
To help identify relationships and answer the investigation question.
A student tests two ramps but changes both the ramp height and surface. Why might this make the results harder to explain?
Because more than one variable changed, so it is harder to tell which change affected the result.