Final Review Practice

1. The variable that is measured is the...

Answer explanation

dependent variable

2. Data or research gathered, also known as scientific data such as, observations, numerical data, measurements, etc. that can be used to support a claim is called

Answer explanation

evidence

3. Ten, six-month old golden retrievers are fed 1 cup of dog food at the same time every day. Five of them eat dog food that is made of meat only. The other five of them eat dog food that contains vegetables. All dogs are allowed outside in the grass for the same length of time every day. This is an example of

• dependent variable

• experimental group

• controlled experiement

• a control group

4. Virgil wants to increase his ability to stay awake more hours of the day so he can do more things he enjoys. He thinks he can stay awake more hours if he eats at least three eggs for breakfast every morning. What is the independent variable?

• three eggs for breakfast
• how many hours virgil can sleep
• how many hours virgil can stay awake
• eggs for breakfast

5. Which of the following sequences of the scientific method is correct

• observation, question, research, hypothesis
• observation, question, experiment, hypothesis
• question, observation, hypothesis, research
• question, hypothesis, experiment, research

6. Density can be described as

• the amount of mass per given volume
• the size
• the state of matter
• the amount of volume per given mass

7. Mass is the

Answer explanation

amount of matter an object has

8. Below is an image of a golf ball on the left and a ping pong ball on the right. Both of these balls have the same volume because they are the same size. They have different masses because they are made up of different materials. The golf ball on the left is heavier than the tennis ball on the right. Which ball has the lesser density?

• golf ball
• ping pong ball
• neither
• cannot be determined

9. Water's density is 1g/ml or 1g/cm³. If a key chain has a density of 1.15g/ml and a grocery card has a density of .088g/ml. Which item will sink in water?

• the key chain
• the grocery card
• neither
• both

10. If my iPhone is 8cm by 5cm by 1cm and has a mass of 39g, what is its density? Round your answer to the nearest TENTH. DONT FORGET YOUR UNITS

• 1.0g/cm³
• 1.02g/cm³
• .975g/cm³
• .9g/cm³