1st Semester Review: Science

Which of the following is a compound?

• Co
• O₂
• C
• CO₂

Jack has a rock. The rock has a mass of 14g and a volume of 2cm³. What is the density of the rock?

• 7 mL
• 7 g/cm³
• 28 g/cm³
• 1/7 g/cm³

Tags

CCSS.7.RP.A.3

Frank has a paper clip. It has a mass of 9g and a volume of 3cm³. What is its density?

• 3 g/cm³
• 1/3 g/cm³
• 27 g/cm³
• 39 g/cm³

Tags

CCSS.HSG.MG.A.2

What is one bad reason why we should NOT conserve coal?

• It creates pollution
• It brings fresh air
• It creates bad storms
• It created diseases

Which of the following tables correctly lists the physical properties of metals and nonmetals?

• A
• B
• C
• D

How many different elements are in this chemical formula: C₂H₂ClK₃

• 6
• 8
• 2
• 4

What is energy conservation?

• Adding up all your energy use
• Reducing energy use

Using wind energy will reduce our dependence on fossil fuels.

• true
• false

What is the main reason why we all don't use solar energy?

• They don't work at night
• On cloudy days we would need backup or storage systems which is expensive and some areas do not receive sun
• They can't be transported to many places
• They are exclusive to only certain countries

What is an advantage  of nuclear energy?

• radioactive waste
• no air pollution
• we will never run out
• it is the safest way to make energy